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Ultrafine grained lumps and a nanostructured powder of Cu-5vol%Al2O3 composite were produced using two high energy mechanical milling routes respectively. The milled composite materials were heat treated at 150, 300 and 500 degC for 1 hour, respectively, to determine the microstructural stability and micohardness changes of the materials as a function of the heat treatment condition. For the Cu-5vol...
In this work, we studied the proton and arsenic ion implantation-induced intermixing in InGaAsP/InGaAs and InAlGaAs/InGaAs quantum wells. The results were compared and discussed based on the defect formation and evolution process under the different implantation conditions and QW barrier materials.
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