Electrical and magnetic properties of an ising-type ferromagnet NpSb 2

Yoshiya Homma; Dai Aoki; Yoshinori Haga; Hironori Sakai; Shugo Ikeda; Etsuji Yamamoto; Akio Nakamura; Yoshinobu Shiokawa; Yoshichika Onuki

doi:10.1143/JPSJ.76.074715

Electrical and magnetic properties of an ising-type ferromagnet NpSb ₂

Yoshiya Homma, Dai Aoki, Yoshinori Haga, Hironori Sakai, Shugo Ikeda, Etsuji Yamamoto, Akio Nakamura, Yoshinobu Shiokawa, Yoshichika Onuki

Materials Processing and Characterization Division

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

1 Citation (Scopus)

Abstract

We succeeded in growing a single crystal of NpSb ₂ with the SmSb ₂-type orthorhombic structure by the Sb-flux method and measured the electrical resistivity, specific heat, magnetic susceptibility and magnetization. NpSb ₂ is found to be an Ising-type ferromagnet with the Curie temperature T _C = 47 K, where the ordered moment of 1.6μ _B/Np is oriented along the [001] direction. The electronic specific heat coefficient is estimated to be 22 mJ/(K ²·mol). The electrical resistivity for the current J ∥ [001] is by two orders of magnitude larger than that for J ⊥ [001], suggesting the quasi-two-dimensional electronic state.

Original language	English
Article number	074715
Journal	journal of the physical society of japan
Volume	76
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.76.074715
Publication status	Published - 2007 Jul

Keywords

Ising-type ferromagnet
NpSb
Quasi-two-dimensional electronic state
Transuranium compound

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.76.074715

Cite this

Electrical and magnetic properties of an ising-type ferromagnet NpSb ₂ . / Homma, Yoshiya ; Aoki, Dai; Haga, Yoshinori; Sakai, Hironori; Ikeda, Shugo; Yamamoto, Etsuji; Nakamura, Akio; Shiokawa, Yoshinobu; Onuki, Yoshichika.

In: journal of the physical society of japan, Vol. 76, No. 7, 074715, 07.2007.

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

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title = "Electrical and magnetic properties of an ising-type ferromagnet NpSb 2 ",

abstract = "We succeeded in growing a single crystal of NpSb 2 with the SmSb 2-type orthorhombic structure by the Sb-flux method and measured the electrical resistivity, specific heat, magnetic susceptibility and magnetization. NpSb 2 is found to be an Ising-type ferromagnet with the Curie temperature T C = 47 K, where the ordered moment of 1.6μ B/Np is oriented along the [001] direction. The electronic specific heat coefficient is estimated to be 22 mJ/(K 2·mol). The electrical resistivity for the current J ∥ [001] is by two orders of magnitude larger than that for J ⊥ [001], suggesting the quasi-two-dimensional electronic state.",

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author = "Yoshiya Homma and Dai Aoki and Yoshinori Haga and Hironori Sakai and Shugo Ikeda and Etsuji Yamamoto and Akio Nakamura and Yoshinobu Shiokawa and Yoshichika Onuki",

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AU - Homma, Yoshiya

AU - Aoki, Dai

AU - Haga, Yoshinori

AU - Sakai, Hironori

AU - Ikeda, Shugo

AU - Yamamoto, Etsuji

AU - Nakamura, Akio

AU - Shiokawa, Yoshinobu

AU - Onuki, Yoshichika

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AB - We succeeded in growing a single crystal of NpSb 2 with the SmSb 2-type orthorhombic structure by the Sb-flux method and measured the electrical resistivity, specific heat, magnetic susceptibility and magnetization. NpSb 2 is found to be an Ising-type ferromagnet with the Curie temperature T C = 47 K, where the ordered moment of 1.6μ B/Np is oriented along the [001] direction. The electronic specific heat coefficient is estimated to be 22 mJ/(K 2·mol). The electrical resistivity for the current J ∥ [001] is by two orders of magnitude larger than that for J ⊥ [001], suggesting the quasi-two-dimensional electronic state.

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