Characteristic high-field magnetization in a transuranium antiferromagnet NpRhGa5

Kiyohiro Sugiyama; Hiroshi Nakashima; Dai Aoki; Yoshinori Haga; Etsuji Yamamoto; Akio Nakamura; Yoshiya Homma; Yoshinobu Shiokawa; Koichi Kindo; Masayuki Hagiwara; Yoshichika Onuki

doi:10.1143/JPSJ.75.094707

Characteristic high-field magnetization in a transuranium antiferromagnet NpRhGa₅

Kiyohiro Sugiyama, Hiroshi Nakashima, Dai Aoki, Yoshinori Haga, Etsuji Yamamoto, Akio Nakamura, Yoshiya Homma, Yoshinobu Shiokawa, Koichi Kindo, Masayuki Hagiwara, Yoshichika Onuki

Materials Processing and Characterization Division

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

6 Citations (Scopus)

Abstract

We have measured the high-field magnetization for a transuranium antiferromagnet NpRhGa₅ with two successive antiferromagnetic transition temperatures of T_N1 = 36 and T_N2 = 32 K and an ordered moment of 0.96 μ_B/Np. For the magnetic field along the easy-axis of the [100] direction of the tetragonal structure, the magnetization indicates a metamagnetic transition at H_c = 26 T with a sharp step and saturates above H_s = 38 T, with 0.43 μ_B/Np. On the other hand, the hard-axis magnetization for H ∥ [001] increases linearly and saturates above H_s = 28 T, with 0.44 μ_B/Np. These magnetization curves were discussed on the basis of reorientation and reduction of the magnetic moment.

Original language	English
Article number	094707
Journal	journal of the physical society of japan
Volume	75
Issue number	9
DOIs	https://doi.org/10.1143/JPSJ.75.094707
Publication status	Published - 2006 Sept

Keywords

High field magnetization
Magnetic anisotropy
Metamagnetic magnetization
NpRhGa

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.75.094707

Cite this

@article{bc241161e94f4ab38c5609781c226b0a,

title = "Characteristic high-field magnetization in a transuranium antiferromagnet NpRhGa5",

abstract = "We have measured the high-field magnetization for a transuranium antiferromagnet NpRhGa5 with two successive antiferromagnetic transition temperatures of TN1 = 36 and TN2 = 32 K and an ordered moment of 0.96 μB/Np. For the magnetic field along the easy-axis of the [100] direction of the tetragonal structure, the magnetization indicates a metamagnetic transition at Hc = 26 T with a sharp step and saturates above Hs = 38 T, with 0.43 μB/Np. On the other hand, the hard-axis magnetization for H ∥ [001] increases linearly and saturates above Hs = 28 T, with 0.44 μB/Np. These magnetization curves were discussed on the basis of reorientation and reduction of the magnetic moment.",

keywords = "High field magnetization, Magnetic anisotropy, Metamagnetic magnetization, NpRhGa",

author = "Kiyohiro Sugiyama and Hiroshi Nakashima and Dai Aoki and Yoshinori Haga and Etsuji Yamamoto and Akio Nakamura and Yoshiya Homma and Yoshinobu Shiokawa and Koichi Kindo and Masayuki Hagiwara and Yoshichika Onuki",

year = "2006",

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doi = "10.1143/JPSJ.75.094707",

language = "English",

volume = "75",

journal = "Journal of the Physical Society of Japan",

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TY - JOUR

T1 - Characteristic high-field magnetization in a transuranium antiferromagnet NpRhGa5

AU - Sugiyama, Kiyohiro

AU - Nakashima, Hiroshi

AU - Aoki, Dai

AU - Haga, Yoshinori

AU - Yamamoto, Etsuji

AU - Nakamura, Akio

AU - Homma, Yoshiya

AU - Shiokawa, Yoshinobu

AU - Kindo, Koichi

AU - Hagiwara, Masayuki

AU - Onuki, Yoshichika

PY - 2006/9

Y1 - 2006/9

N2 - We have measured the high-field magnetization for a transuranium antiferromagnet NpRhGa5 with two successive antiferromagnetic transition temperatures of TN1 = 36 and TN2 = 32 K and an ordered moment of 0.96 μB/Np. For the magnetic field along the easy-axis of the [100] direction of the tetragonal structure, the magnetization indicates a metamagnetic transition at Hc = 26 T with a sharp step and saturates above Hs = 38 T, with 0.43 μB/Np. On the other hand, the hard-axis magnetization for H ∥ [001] increases linearly and saturates above Hs = 28 T, with 0.44 μB/Np. These magnetization curves were discussed on the basis of reorientation and reduction of the magnetic moment.

AB - We have measured the high-field magnetization for a transuranium antiferromagnet NpRhGa5 with two successive antiferromagnetic transition temperatures of TN1 = 36 and TN2 = 32 K and an ordered moment of 0.96 μB/Np. For the magnetic field along the easy-axis of the [100] direction of the tetragonal structure, the magnetization indicates a metamagnetic transition at Hc = 26 T with a sharp step and saturates above Hs = 38 T, with 0.43 μB/Np. On the other hand, the hard-axis magnetization for H ∥ [001] increases linearly and saturates above Hs = 28 T, with 0.44 μB/Np. These magnetization curves were discussed on the basis of reorientation and reduction of the magnetic moment.

KW - High field magnetization

KW - Magnetic anisotropy

KW - Metamagnetic magnetization

KW - NpRhGa

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DO - 10.1143/JPSJ.75.094707

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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

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