High field X-ray diffraction studies on magnetic refrigerants

Keiichi Koyama; Fumihiro Ishikawa; Kazuo Watanabe

High field X-ray diffraction studies on magnetic refrigerants

Keiichi Koyama, Fumihiro Ishikawa, Kazuo Watanabe

金属材料研究所・附属強磁場超伝導材料研究センター

研究成果: Article › 査読

4 被引用数 (Scopus)

抄録

In this paper, we review our recent results on magnetic refrigerants MnAs_1-xSb_x and MnFeAs_0.5P_0.5 by powder X-ray diffraction measurements in fields up to 5 T and in the temperature range from 8 to 320 K. MnAs shows a first-ordered structural transition with the volume expansion of 2.1% accompanied by a metamagnetic transition, but MnAs_0.9Sb_0.1 exhibits an isostructural transition with the volume expansion of 1.1%. The cell volume of MnFeAs_0.5P _0.5 slightly (-0.4%) and continuously decreases with increasing a magnetic field through the metamagnetic transition.

本文言語	English
ページ（範囲）	153-163
ページ数	11
ジャーナル	International Journal of Applied Electromagnetics and Mechanics
巻	23
号	3-4
出版ステータス	Published - 2006 9 25

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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引用スタイル

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abstract = "In this paper, we review our recent results on magnetic refrigerants MnAs1-xSbx and MnFeAs0.5P0.5 by powder X-ray diffraction measurements in fields up to 5 T and in the temperature range from 8 to 320 K. MnAs shows a first-ordered structural transition with the volume expansion of 2.1% accompanied by a metamagnetic transition, but MnAs0.9Sb0.1 exhibits an isostructural transition with the volume expansion of 1.1%. The cell volume of MnFeAs0.5P 0.5 slightly (-0.4%) and continuously decreases with increasing a magnetic field through the metamagnetic transition.",

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AU - Koyama, Keiichi

AU - Ishikawa, Fumihiro

AU - Watanabe, Kazuo

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N2 - In this paper, we review our recent results on magnetic refrigerants MnAs1-xSbx and MnFeAs0.5P0.5 by powder X-ray diffraction measurements in fields up to 5 T and in the temperature range from 8 to 320 K. MnAs shows a first-ordered structural transition with the volume expansion of 2.1% accompanied by a metamagnetic transition, but MnAs0.9Sb0.1 exhibits an isostructural transition with the volume expansion of 1.1%. The cell volume of MnFeAs0.5P 0.5 slightly (-0.4%) and continuously decreases with increasing a magnetic field through the metamagnetic transition.

AB - In this paper, we review our recent results on magnetic refrigerants MnAs1-xSbx and MnFeAs0.5P0.5 by powder X-ray diffraction measurements in fields up to 5 T and in the temperature range from 8 to 320 K. MnAs shows a first-ordered structural transition with the volume expansion of 2.1% accompanied by a metamagnetic transition, but MnAs0.9Sb0.1 exhibits an isostructural transition with the volume expansion of 1.1%. The cell volume of MnFeAs0.5P 0.5 slightly (-0.4%) and continuously decreases with increasing a magnetic field through the metamagnetic transition.

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KW - High field X-ray diffraction

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KW - Magnetovolume effect

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