Phase transition in Ti50 Ni44 Fe6 studied by x-ray fluorescence holography

Wen Hu; Koichi Hayashi; Tokujiro Yamamoto; Naohisa Happo; Shinya Hosokawa; Tomoyuki Terai; Takashi Fukuda; Tomoyuki Kakeshita; Honglan Xie; Tiqiao Xiao; Motohiro Suzuki

doi:10.1103/PhysRevB.80.060202

Phase transition in Ti50 Ni44 Fe6 studied by x-ray fluorescence holography

Wen Hu, Koichi Hayashi, Tokujiro Yamamoto, Naohisa Happo, Shinya Hosokawa, Tomoyuki Terai, Takashi Fukuda, Tomoyuki Kakeshita, Honglan Xie, Tiqiao Xiao, Motohiro Suzuki

Materials Development Division

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

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.

Original language	English
Article number	060202
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.80.060202
Publication status	Published - 2009 Aug 28

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Phase transition in Ti50 Ni44 Fe6 studied by x-ray fluorescence holography. / Hu, Wen; Hayashi, Koichi; Yamamoto, Tokujiro; Happo, Naohisa; Hosokawa, Shinya; Terai, Tomoyuki; Fukuda, Takashi; Kakeshita, Tomoyuki; Xie, Honglan; Xiao, Tiqiao; Suzuki, Motohiro.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 6, 060202, 28.08.2009.

Research output: Contribution to journal › Article › peer-review

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abstract = "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 {\AA} 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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AU - Terai, Tomoyuki

AU - Fukuda, Takashi

AU - Kakeshita, Tomoyuki

AU - Xie, Honglan

AU - Xiao, Tiqiao

AU - Suzuki, Motohiro

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