Order-disorder transition of vacancies from the full- to the half-Heusler structure in Ni2-xMnSb alloys

M. Nagasako; Y. Taguchi; T. Miyamoto; T. Kanomata; K. R.A. Ziebeck; R. Kainuma

doi:10.1016/j.intermet.2015.02.014

Order-disorder transition of vacancies from the full- to the half-Heusler structure in Ni_2-xMnSb alloys

M. Nagasako, Y. Taguchi, T. Miyamoto, T. Kanomata, K. R.A. Ziebeck, R. Kainuma

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

5 Citations (Scopus)

Abstract

The thermal transformations and crystal structures in the ordered bcc phases appearing in Ni_2-xMnSb alloys have been investigated. Thermo-analyses on NiMnSb(x = 1) show three λ-shaped peaks suggesting a magnetic and chemical ordering transitions at approximately 450, 865 and 965 °C. With decreasing x, the first and second peak temperatures gradually decrease, while the third one increases. By Z-contrast imaging technique, it was confirmed that the second peak corresponds to the order-disorder transition of vacancies from the L2₁ to the C1_b structure.

Original language	English
Pages (from-to)	38-41
Number of pages	4
Journal	Intermetallics
Volume	61
DOIs	https://doi.org/10.1016/j.intermet.2015.02.014
Publication status	Published - 2015 Jun

Keywords

A. Magnetic intermetallics
B. Order/disorder transformation
D. Point defect
D. Site occupancy
F. Differential scanning calorimetry
F. Electron microscopy transmission

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.intermet.2015.02.014

Cite this

@article{502fdd4cb7254ff996c250b5378dc35f,

title = "Order-disorder transition of vacancies from the full- to the half-Heusler structure in Ni2-xMnSb alloys",

abstract = "The thermal transformations and crystal structures in the ordered bcc phases appearing in Ni2-xMnSb alloys have been investigated. Thermo-analyses on NiMnSb(x = 1) show three λ-shaped peaks suggesting a magnetic and chemical ordering transitions at approximately 450, 865 and 965 °C. With decreasing x, the first and second peak temperatures gradually decrease, while the third one increases. By Z-contrast imaging technique, it was confirmed that the second peak corresponds to the order-disorder transition of vacancies from the L21 to the C1b structure.",

keywords = "A. Magnetic intermetallics, B. Order/disorder transformation, D. Point defect, D. Site occupancy, F. Differential scanning calorimetry, F. Electron microscopy transmission",

author = "M. Nagasako and Y. Taguchi and T. Miyamoto and T. Kanomata and Ziebeck, {K. R.A.} and R. Kainuma",

note = "Funding Information: This study was supported by the Global COE Program “Materials Integration (International Center of Education and Research), Tohoku University”, MEXT , Japan. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = jun,

doi = "10.1016/j.intermet.2015.02.014",

language = "English",

volume = "61",

pages = "38--41",

journal = "Intermetallics",

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T1 - Order-disorder transition of vacancies from the full- to the half-Heusler structure in Ni2-xMnSb alloys

AU - Nagasako, M.

AU - Taguchi, Y.

AU - Miyamoto, T.

AU - Kanomata, T.

AU - Ziebeck, K. R.A.

AU - Kainuma, R.

N1 - Funding Information: This study was supported by the Global COE Program “Materials Integration (International Center of Education and Research), Tohoku University”, MEXT , Japan. Publisher Copyright: © 2015 Elsevier Ltd.

PY - 2015/6

Y1 - 2015/6

N2 - The thermal transformations and crystal structures in the ordered bcc phases appearing in Ni2-xMnSb alloys have been investigated. Thermo-analyses on NiMnSb(x = 1) show three λ-shaped peaks suggesting a magnetic and chemical ordering transitions at approximately 450, 865 and 965 °C. With decreasing x, the first and second peak temperatures gradually decrease, while the third one increases. By Z-contrast imaging technique, it was confirmed that the second peak corresponds to the order-disorder transition of vacancies from the L21 to the C1b structure.

AB - The thermal transformations and crystal structures in the ordered bcc phases appearing in Ni2-xMnSb alloys have been investigated. Thermo-analyses on NiMnSb(x = 1) show three λ-shaped peaks suggesting a magnetic and chemical ordering transitions at approximately 450, 865 and 965 °C. With decreasing x, the first and second peak temperatures gradually decrease, while the third one increases. By Z-contrast imaging technique, it was confirmed that the second peak corresponds to the order-disorder transition of vacancies from the L21 to the C1b structure.

KW - A. Magnetic intermetallics

KW - B. Order/disorder transformation

KW - D. Point defect

KW - D. Site occupancy

KW - F. Differential scanning calorimetry

KW - F. Electron microscopy transmission

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