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  <element id="axti_CarryingValueIndirectMinorityInvestments" name="CarryingValueIndirectMinorityInvestments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_NumberOfFullyImpairedEntities" name="NumberOfFullyImpairedEntities" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_EquityMethodInvestmentsIncomeLossExcludingImpairmentCharges" name="EquityMethodInvestmentsIncomeLossExcludingImpairmentCharges" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_NumberOfSubsidiaries" name="NumberOfSubsidiaries" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_PercentageOfGallium" name="PercentageOfGallium" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_ContractWithCustomerLiabilityTableTextBlock" name="ContractWithCustomerLiabilityTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_CashAndCashEquivalentsAndDebtSecuritiesAvailableForSaleAmortizedCost" name="CashAndCashEquivalentsAndDebtSecuritiesAvailableForSaleAmortizedCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_CashAndCashEquivalentsAndDebtSecuritiesAvailableForSale" name="CashAndCashEquivalentsAndDebtSecuritiesAvailableForSale" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_ConstructionInProgressDingxinAndChaoyangLocationsMember" name="ConstructionInProgressDingxinAndChaoyangLocationsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_PercentageIncreaseInOwnershipFromShareIssuance" name="PercentageIncreaseInOwnershipFromShareIssuance" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_CurrentPayableConnectionPurchaseSubsidiaryShares" name="CurrentPayableConnectionPurchaseSubsidiaryShares" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_NumberOfPaymentInstallments" name="NumberOfPaymentInstallments" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_AdditionalMinorityOwnershipPercentageByParent" name="AdditionalMinorityOwnershipPercentageByParent" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_NumberOfTransfersBetweenFairValueMeasurements" name="NumberOfTransfersBetweenFairValueMeasurements" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_ExpectedPeriodToReceiveSalesCommissions" name="ExpectedPeriodToReceiveSalesCommissions" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_WellsFargoBankMember" name="WellsFargoBankMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_BalanceSheetDetailDisclosureAbstract" name="BalanceSheetDetailDisclosureAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_CurrentPayableInConnectionWithConstructions" name="CurrentPayableInConnectionWithConstructions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_AccruedDeferredGovernmentGrant" name="AccruedDeferredGovernmentGrant" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_HaisiOptoelectronicsMember" name="HaisiOptoelectronicsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_FiveMinorityInvestmentsMember" name="FiveMinorityInvestmentsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_LesseeWeightedAverageRemainingLeaseTermAndWeightedAverageDiscountRateOfLeasesTableTextBlock" name="LesseeWeightedAverageRemainingLeaseTermAndWeightedAverageDiscountRateOfLeasesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_LesseeSupplementalCashFlowInformationOfLeasesTableTextBlock" name="LesseeSupplementalCashFlowInformationOfLeasesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_NonControllingInterestNetOfAccumulatedOtherComprehensiveIncomeAttributableToSubsidiaryCarryingValue" name="NonControllingInterestNetOfAccumulatedOtherComprehensiveIncomeAttributableToSubsidiaryCarryingValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_DerecognitionOfNetAssets" name="DerecognitionOfNetAssets" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_RetainedNoncontrollingInvestmentCarryingValue" name="RetainedNoncontrollingInvestmentCarryingValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="axti_ScheduleOfGainLossOnDeconsolidationOfSubsidiary" name="ScheduleOfGainLossOnDeconsolidationOfSubsidiary" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
</xs:schema>
