Lattice distortions and phase diagram of antiferromagnetic γ-MnIr disordered alloy system

K. Sasao; R. Y. Umetsu; K. Fukamichi; A. Sakuma

doi:10.1016/S0925-8388(02)01115-5

Lattice distortions and phase diagram of antiferromagnetic γ-MnIr disordered alloy system

K. Sasao, R. Y. Umetsu, K. Fukamichi, A. Sakuma

Cooperative Research and Development Center for Advanced Materials

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

9 Citations (Scopus)

Abstract

The lattice distortions and the phase diagram of antiferromagnetic γ-Mn_100-xIr_x disordered alloys have been investigated. The phase boundary between the face-centered-tetragonal (fct) and the face-centered-cubic (fcc) structures exists at around x = 15, being about 2-3 at.% Ir higher than that published in a previous paper. It is pointed out that the structural transformation from the fct (c>a) to the fcc structure is not necessarily accompanied by the magnetic transition from the 2Q to the 3Q spin structure state. At a much lower concentration of about x = 7, a lattice distortion to a face-centered-orthorhombic (fco) structure takes place in analogy with many kinds of γ-Mn disordered alloys.

Original language	English
Pages (from-to)	21-25
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	352
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(02)01115-5
Publication status	Published - 2003 Mar 24

Keywords

Magnetic measurements
Phase diagram
Phase transition
Transition metal alloys

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0925-8388(02)01115-5

Cite this

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title = "Lattice distortions and phase diagram of antiferromagnetic γ-MnIr disordered alloy system",

abstract = "The lattice distortions and the phase diagram of antiferromagnetic γ-Mn100-xIrx disordered alloys have been investigated. The phase boundary between the face-centered-tetragonal (fct) and the face-centered-cubic (fcc) structures exists at around x = 15, being about 2-3 at.% Ir higher than that published in a previous paper. It is pointed out that the structural transformation from the fct (c>a) to the fcc structure is not necessarily accompanied by the magnetic transition from the 2Q to the 3Q spin structure state. At a much lower concentration of about x = 7, a lattice distortion to a face-centered-orthorhombic (fco) structure takes place in analogy with many kinds of γ-Mn disordered alloys.",

keywords = "Magnetic measurements, Phase diagram, Phase transition, Transition metal alloys",

author = "K. Sasao and Umetsu, {R. Y.} and K. Fukamichi and A. Sakuma",

note = "Funding Information: The present work was supported by a Grant-in-Aid for Scientific Research (B)(2), No.13450255, from the Japan Society for the Promotion of Science. Two of the authors (K.S. and R.Y.U.) have been supported by the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists. ",

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doi = "10.1016/S0925-8388(02)01115-5",

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AU - Sasao, K.

AU - Umetsu, R. Y.

AU - Fukamichi, K.

AU - Sakuma, A.

N1 - Funding Information: The present work was supported by a Grant-in-Aid for Scientific Research (B)(2), No.13450255, from the Japan Society for the Promotion of Science. Two of the authors (K.S. and R.Y.U.) have been supported by the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.

PY - 2003/3/24

Y1 - 2003/3/24

N2 - The lattice distortions and the phase diagram of antiferromagnetic γ-Mn100-xIrx disordered alloys have been investigated. The phase boundary between the face-centered-tetragonal (fct) and the face-centered-cubic (fcc) structures exists at around x = 15, being about 2-3 at.% Ir higher than that published in a previous paper. It is pointed out that the structural transformation from the fct (c>a) to the fcc structure is not necessarily accompanied by the magnetic transition from the 2Q to the 3Q spin structure state. At a much lower concentration of about x = 7, a lattice distortion to a face-centered-orthorhombic (fco) structure takes place in analogy with many kinds of γ-Mn disordered alloys.

AB - The lattice distortions and the phase diagram of antiferromagnetic γ-Mn100-xIrx disordered alloys have been investigated. The phase boundary between the face-centered-tetragonal (fct) and the face-centered-cubic (fcc) structures exists at around x = 15, being about 2-3 at.% Ir higher than that published in a previous paper. It is pointed out that the structural transformation from the fct (c>a) to the fcc structure is not necessarily accompanied by the magnetic transition from the 2Q to the 3Q spin structure state. At a much lower concentration of about x = 7, a lattice distortion to a face-centered-orthorhombic (fco) structure takes place in analogy with many kinds of γ-Mn disordered alloys.

KW - Magnetic measurements

KW - Phase diagram

KW - Phase transition

KW - Transition metal alloys

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JO - Journal of Alloys and Compounds

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IS - 1-2

ER -

Lattice distortions and phase diagram of antiferromagnetic γ-MnIr disordered alloy system

Abstract

Keywords

ASJC Scopus subject areas

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