The selected area electron diffraction (SAED) pattern of the twin was indexed by transforming matrix of hexagon crystal twin plan.

并采用六方晶系孪晶面的变换矩阵对孪晶电子衍射花样进行了标定。

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The results indicate that a stable and suitable thermal field, the transparence of B_2O_3, doping quantity are important conditions for growth of twin-free InP crystal.

实验证明，建立一个稳定合适的热场、保持b_2o_3的透明度、控制好掺杂量等是减少孪晶的必要条件。

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At the time of deformation reached 40%, the appearance of the crystal changed greatly: the size refined, boundary turned clear, second phase disappeared and twin crystal structure appeared.

变形量为40%时，轧板的晶粒形貌发生了显著变化，晶粒变得细小，晶界清晰，第二相完全消失，并出现孪晶组织。

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