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  <xsd:element id="axti_LesseeSupplementalCashFlowInformationOfLeasesTableTextBlock" name="LesseeSupplementalCashFlowInformationOfLeasesTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_XiaoyiXinganGalliumCo.Ltd.Member" name="XiaoyiXinganGalliumCo.Ltd.Member" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_EquityMethodInvestmentReturns" name="EquityMethodInvestmentReturns" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="axti_InvestmentsTableTextBlock" name="InvestmentsTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_InvestmentScheduleAbstract" name="InvestmentScheduleAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_TermOfAgreement" name="TermOfAgreement" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_CrossLicenseAgreementMember" name="CrossLicenseAgreementMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_IncomeFromGovernmentGrants" name="IncomeFromGovernmentGrants" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="axti_BankOfChinaMember" name="BankOfChinaMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_ChaoyangJinmeiGalliumCo.LtdMember" name="ChaoyangJinmeiGalliumCo.LtdMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_PercentageOfOwnershipInterestSold" name="PercentageOfOwnershipInterestSold" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_RedeemableNonControllingInterestsStockIssuanceCosts" name="RedeemableNonControllingInterestsStockIssuanceCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="axti_InvestmentsApprovedByGovernment" name="InvestmentsApprovedByGovernment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="axti_PercentageOfEquityIssuedOnConversionOfNonControllingInterests" name="PercentageOfEquityIssuedOnConversionOfNonControllingInterests" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_PercentageOfEquityPurchasedByEmployeesKeyManagersAndContributors" name="PercentageOfEquityPurchasedByEmployeesKeyManagersAndContributors" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_ConstructionInProgressDingxinAndKazuoLocationsMember" name="ConstructionInProgressDingxinAndKazuoLocationsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_RedeemableNonControllingInterestsOwnershipPercentage" name="RedeemableNonControllingInterestsOwnershipPercentage" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_ChaoyangXinmeiHighPuritySemiconductorMaterialsCo.LtdMember" name="ChaoyangXinmeiHighPuritySemiconductorMaterialsCo.LtdMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_TotalInvestmentOfJointVentureAgreement" name="TotalInvestmentOfJointVentureAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="axti_JointVentureAgreementInitialInvestmentFundsCollected" name="JointVentureAgreementInitialInvestmentFundsCollected" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="axti_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="axti_PercentageOfTargetedFinancialPerformance" name="PercentageOfTargetedFinancialPerformance" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="axti_NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsOtherNonredeemable" name="NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsOtherNonredeemable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="axti_AxtTongmeiInc.Member" name="AxtTongmeiInc.Member" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_IncreaseInNoncontrollingInterestsDueToTransferOfSubsidiaryWithNoncontrollingInterests" name="IncreaseInNoncontrollingInterestsDueToTransferOfSubsidiaryWithNoncontrollingInterests" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="axti_IncreaseInRedeemableNoncontrollingInterestsDueToTransferOfSubsidiaryWithNoncontrollingInterests" name="IncreaseInRedeemableNoncontrollingInterestsDueToTransferOfSubsidiaryWithNoncontrollingInterests" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="axti_MinorityInvestorMember" name="MinorityInvestorMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="axti_LoanFromRelatedPartyMember" name="LoanFromRelatedPartyMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element name="BankOfCommunicationsMember" id="axti_BankOfCommunicationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ChinaMerchantsBankMember" id="axti_ChinaMerchantsBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StockBasedCompensationAttributableToNoncontrollingInterest" id="axti_StockBasedCompensationAttributableToNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="StockBasedCompensationAttributableToRedeemableNoncontrollingInterest" id="axti_StockBasedCompensationAttributableToRedeemableNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectOfForeignCurrencyTranslationOnRedeemableNoncontrollingInterests" id="axti_EffectOfForeignCurrencyTranslationOnRedeemableNoncontrollingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ChaoyangXinmeiMember" id="axti_ChaoyangXinmeiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NonControllingInterestsInvestmentsInSubsidiary" id="axti_NonControllingInterestsInvestmentsInSubsidiary" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOfSubsidiary" id="axti_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationOfSubsidiary" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="InvestmentInSubsidiaryFromNonControllingInterest" id="axti_InvestmentInSubsidiaryFromNonControllingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AnnualRevenueGrowthRatePercentage" id="axti_AnnualRevenueGrowthRatePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BankOfBeijingMember" id="axti_BankOfBeijingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IndustrialBankMember" id="axti_IndustrialBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ChaoYangShuoMeiHighPuritySemiconductorMaterialsCoLtdMember" id="axti_ChaoYangShuoMeiHighPuritySemiconductorMaterialsCoLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ChaoYangTongmeiXtalTechnologyCoLtdMember" id="axti_ChaoYangTongmeiXtalTechnologyCoLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProceedsFromCapitalIncreaseInSubsidiarySharesFromNoncontrollingInterest" id="axti_ProceedsFromCapitalIncreaseInSubsidiarySharesFromNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ChaoYangJinMeiGalliumLtd.Member" id="axti_ChaoYangJinMeiGalliumLtd.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LoanProceedsPaidDirectlyToThirdPartyIncludedInAccountsPayable" id="axti_LoanProceedsPaidDirectlyToThirdPartyIncludedInAccountsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="JointVentureAgreementsFurtherInvestment" id="axti_JointVentureAgreementsFurtherInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ChaoyangKaimeiQuartzCoLtdMember" id="axti_ChaoyangKaimeiQuartzCoLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NingboBankMember" id="axti_NingboBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NanjingBankMember" id="axti_NanjingBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.6PercentJanuary2022DueDateMember" id="axti_BankLoanWith4.6PercentJanuary2022DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.2PercentMay2023DueDateMember" id="axti_BankLoanWith4.2PercentMay2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.4PercentJune2023DueDateMember" id="axti_BankLoanWith4.4PercentJune2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.4PercentSeptember2023DueDateMember" id="axti_BankLoanWith4.4PercentSeptember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.8PercentAugust2023DueDateMember" id="axti_BankLoanWith4.8PercentAugust2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.8PercentSeptember2023DueDateMember" id="axti_BankLoanWith4.8PercentSeptember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.2PercentJuly2023DueDateMember" id="axti_BankLoanWith3.2PercentJuly2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.3PercentSeptember2023DueDateMember" id="axti_BankLoanWith4.3PercentSeptember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.8PercentMarch2023DueDateMember" id="axti_BankLoanWith4.8PercentMarch2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith2.7PercentMarch2023DueDateMember" id="axti_BankLoanWith2.7PercentMarch2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.2PercentApril2023DueDateMember" id="axti_BankLoanWith4.2PercentApril2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.3PercentJanuary2023DueDateOneMember" id="axti_BankLoanWith3.3PercentJanuary2023DueDateOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.3PercentDecember2023DueDateMember" id="axti_BankLoanWith3.3PercentDecember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.5PercentNovember2023DueDateMember" id="axti_BankLoanWith4.5PercentNovember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.5PercentDecember2023DueDateMember" id="axti_BankLoanWith4.5PercentDecember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.3PercentNovember2023DueDateMember" id="axti_BankLoanWith4.3PercentNovember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith2.8PercentDecember2023DueDateMember" id="axti_BankLoanWith2.8PercentDecember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.6PercentMay2023DueDateMember" id="axti_BankLoanWith3.6PercentMay2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.8PercentJune2023DueDateTwoMember" id="axti_BankLoanWith4.8PercentJune2023DueDateTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ChaoyangLimeiSemiconductorTechnologyCo.Ltd.Member" id="axti_ChaoyangLimeiSemiconductorTechnologyCo.Ltd.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MinorityInvestorsMember" id="axti_MinorityInvestorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfSharesEligibleToVest" id="axti_NumberOfSharesEligibleToVest" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="BankLoanWith3.5PercentJanuary2024DueDateOneMember" id="axti_BankLoanWith3.5PercentJanuary2024DueDateOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith2.8PercentOneMarch2024DueDateOneMember" id="axti_BankLoanWith2.8PercentOneMarch2024DueDateOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.3PercentJanuary2024DueDateTwoMember" id="axti_BankLoanWith3.3PercentJanuary2024DueDateTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.7PercentJanuary2024DueDateMember" id="axti_BankLoanWith3.7PercentJanuary2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.2PercentOneJanuary2024DueDateThreeMember" id="axti_BankLoanWith4.2PercentOneJanuary2024DueDateThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.5PercentJanuary2024DueDateMember" id="axti_BankLoanWith4.5PercentJanuary2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith2.4PercentJanuary2024DueDateMember" id="axti_BankLoanWith2.4PercentJanuary2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.6PercentSeptember2023DueDateMember" id="axti_BankLoanWith3.6PercentSeptember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.5PercentJanuary2024DueDateTwoMember" id="axti_BankLoanWith3.5PercentJanuary2024DueDateTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith4.8PercentJune2023DueDateMember" id="axti_BankLoanWith4.8PercentJune2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestedInPeriod" id="axti_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceTargetCapPercentage" id="axti_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceTargetCapPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ScenarioPerformanceMinimumFinancialMetricMember" id="axti_ScenarioPerformanceMinimumFinancialMetricMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FairValueAssetLevel1ToLevel2TransfersAmount" id="axti_FairValueAssetLevel1ToLevel2TransfersAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FairValueTransferBetweenLevel1AndLevel2DescriptionAndPolicyAbstract" id="axti_FairValueTransferBetweenLevel1AndLevel2DescriptionAndPolicyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FairValueAssetLevel2ToLevel1TransfersAmount" id="axti_FairValueAssetLevel2ToLevel1TransfersAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ScheduleOfGainLossOnSaleAndRemeasurementOfEquityMethodInvestmentsTableTextBlock" id="axti_ScheduleOfGainLossOnSaleAndRemeasurementOfEquityMethodInvestmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EquityMethodInvestmentsSaleForeignIncomeTaxWithholding" id="axti_EquityMethodInvestmentsSaleForeignIncomeTaxWithholding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EquityMethodInvestmentAmountRetainedCarryingValue" id="axti_EquityMethodInvestmentAmountRetainedCarryingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GainLossOnRetainedEquityMethodInvestmentsRemeasurement" id="axti_GainLossOnRetainedEquityMethodInvestmentsRemeasurement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="June2023BankLoanOneMember" id="axti_June2023BankLoanOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="June2023BankLoanTwoMember" id="axti_June2023BankLoanTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.2PercentMay2024DueDateMember" id="axti_BankLoanWith3.2PercentMay2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.2PercentFebruary2024DueDateMember" id="axti_BankLoanWith3.2PercentFebruary2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.7PercentNovember2023DueDateMember" id="axti_BankLoanWith3.7PercentNovember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.7PercentDecember2023DueDateMember" id="axti_BankLoanWith3.7PercentDecember2023DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BankLoanWith3.8PercentMay2024DueDateMember" id="axti_BankLoanWith3.8PercentMay2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EquityMethodInvestmentsSaleConsiderationFairValue" id="axti_EquityMethodInvestmentsSaleConsiderationFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BankLoanWith4.3PercentJune2024DueDateMember" id="axti_BankLoanWith4.3PercentJune2024DueDateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PercentageOfEquityInterestSold" id="axti_PercentageOfEquityInterestSold" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="InvestmentsExcludingBeijingJiyaSemiconductorMaterialCo.Ltd.Member" id="axti_InvestmentsExcludingBeijingJiyaSemiconductorMaterialCo.Ltd.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EquityMethodInvestmentsCarryingValueOfAssetAfterWriteDown" id="axti_EquityMethodInvestmentsCarryingValueOfAssetAfterWriteDown" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EquityMethodInvestmentRealizedGainLossOnAdjustmentToFairValue" id="axti_EquityMethodInvestmentRealizedGainLossOnAdjustmentToFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
</xsd:schema>
