In this letter we report of A165Fe15Cu20 alloy by means of electron and X-ray diffractometry.A new crystalline phase of body-center-cubic structure with a lattice parameter a°=1.407nm was observed together with t...In this letter we report of A165Fe15Cu20 alloy by means of electron and X-ray diffractometry.A new crystalline phase of body-center-cubic structure with a lattice parameter a°=1.407nm was observed together with the icosahedral phase in the same sample.The new phase is supposed to be an isomorph of Mg32(A1,Zn)49(R phase)on the basis of structure factor calculation.展开更多
Using X-ray precession method,it is found that the distribution of reciprocal lattice ofβ-W structure is lust the distortion of the reciprocal space of A16Li3Cu quasicrystal structure.Except the distortion,the X-ray ...Using X-ray precession method,it is found that the distribution of reciprocal lattice ofβ-W structure is lust the distortion of the reciprocal space of A16Li3Cu quasicrystal structure.Except the distortion,the X-ray diffraction patterns along 5-fold,3-fold and 2-fold axes can be observed.Their angular relations satisfy well with those of the perfect icosahedral symmetry;and all the diffraction spots can be indexed approxmately to be six-dimension and strictly in three-dimension.展开更多
基金Project supported by the National Science Foundation of China.
文摘In this letter we report of A165Fe15Cu20 alloy by means of electron and X-ray diffractometry.A new crystalline phase of body-center-cubic structure with a lattice parameter a°=1.407nm was observed together with the icosahedral phase in the same sample.The new phase is supposed to be an isomorph of Mg32(A1,Zn)49(R phase)on the basis of structure factor calculation.
文摘Using X-ray precession method,it is found that the distribution of reciprocal lattice ofβ-W structure is lust the distortion of the reciprocal space of A16Li3Cu quasicrystal structure.Except the distortion,the X-ray diffraction patterns along 5-fold,3-fold and 2-fold axes can be observed.Their angular relations satisfy well with those of the perfect icosahedral symmetry;and all the diffraction spots can be indexed approxmately to be six-dimension and strictly in three-dimension.
