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Crystallization characteristics of Fe‐Zr metallic glasses from Fe4 3Zr5 7 to Fe2 0Zr8 0
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4.In our previous studies (Refs. 1 and 2), we were at pains to stress that samples were stored under liquid nitrogen. After several years experience, we now find that this is an unnecessary precaution for Zr‐based glasses, except for Cu‐Zr.
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8.We reported an identical effect in both Cu‐Zr (see Ref. 1) and Ni‐Zr (see Ref. 2).
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18.It is of interest to compare the packing fractions of tetragonal (0.74) and (0.76) with (0.74) and (0.75 to 0.77, depending on pressure).
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20.There is an interesting similarity between and the γ phase of U‐Zr at the composition 21 The formation of this phase from the Δ phase involves an increase in resistance and a negative coefficient of resistivity, similar to The unit cell of was originally indexed as cubic with The crystals of however exhibited optical anisotropy and further x‐ray work22 revealed that in fact the γ to Δ transition yields twinned crystals with four hexagonal cells oriented in such a way that the x‐ray diffraction pattern appears cubic. The hexagonal cell has and We have also been able to index the pattern of to a hexagonal cell with and The space group is P 6mm with 2 units per cell with Zr at (0, 0, 0), (1/2, 0, 0.34), (0, 1/2, 0.34), (1/2, 1/2, 0.34), and Fe at (1/3, 2/3, 0.90), and (2/3, 1/3, 0.90). Allowing for the presence of and this structure accounts for the positions and intensities of the observed 36 lines up to
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