TY - JOUR
T1 - Phase transition in Ti50 Ni44 Fe6 studied by x-ray fluorescence holography
AU - Hu, Wen
AU - Hayashi, Kouichi
AU - Yamamoto, Tokujiro
AU - Happo, Naohisa
AU - Hosokawa, Shinya
AU - Terai, Tomoyuki
AU - Fukuda, Takashi
AU - Kakeshita, Tomoyuki
AU - Xie, Honglan
AU - Xiao, Tiqiao
AU - Suzuki, Motohiro
PY - 2009/8/28
Y1 - 2009/8/28
N2 - The phase transition behavior of the local structure around Fe in a shape-memory-alloy-related material, Ti50 Ni44 Fe6, was evaluated by x-ray fluorescence holography. The FeKα holograms were recorded at 225 and 100 K, which correspond to the parent and commensurate phases, respectively. The atomic images at both the phases show that the first neighbor Ti atoms around Fe, fluctuating in the parent phase, is strongly stabilized in the commensurate phase and that a clusterlike structure with a radius of 8 Å is formed in this lower temperature phase. These dynamically structural changes offer important keys to understanding the precursors to the martensite phase transition of the TiNi series.
AB - The phase transition behavior of the local structure around Fe in a shape-memory-alloy-related material, Ti50 Ni44 Fe6, was evaluated by x-ray fluorescence holography. The FeKα holograms were recorded at 225 and 100 K, which correspond to the parent and commensurate phases, respectively. The atomic images at both the phases show that the first neighbor Ti atoms around Fe, fluctuating in the parent phase, is strongly stabilized in the commensurate phase and that a clusterlike structure with a radius of 8 Å is formed in this lower temperature phase. These dynamically structural changes offer important keys to understanding the precursors to the martensite phase transition of the TiNi series.
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U2 - 10.1103/PhysRevB.80.060202
DO - 10.1103/PhysRevB.80.060202
M3 - Article
AN - SCOPUS:70249093596
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 6
M1 - 060202
ER -