Magnetic properties of tetragonal Ce1-xLuxB 2C2 (0 ≤ x ≤ 0.31) compounds

Aya Tobo; Kenichi Ishimoto; Junya Konno; Kenji Ohoyama; Koji Kaneko; Yasuo Yamaguchi; Hideya Onodera

doi:10.1143/JPSJ.72.3231

Magnetic properties of tetragonal Ce_1-xLu_xB ₂C₂ (0 ≤ x ≤ 0.31) compounds

Aya Tobo, Kenichi Ishimoto, Junya Konno, Kenji Ohoyama, Koji Kaneko, Yasuo Yamaguchi, Hideya Onodera

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Specific heat, dc- and ac-magnetic susceptibility and magnetization measurements were performed on rare earth intermetallic compounds Ce _1-xLu_xB₂C₂ (0 ≤ x ≤ 0.31) in order to elucidate the magnetic interaction in CeB₂C₂. In the process of the substitution of Ce by Lu in CeB₂C₂, the characteristics of magnetic transition change from a first-order transition to a second-order one. Furthermore, the spin-glass phase appears at Lu concentration x = 0.31. We suppose that the ferromagnetic (FM) and antiferromagnetic (AFM) interactions compete and nearly cancel out each other in CeB₂C₂, and hence that a biquadratic interaction might cause the first-order magnetic transition at T_N. The Lu substitution breaks the competition between AFM and FM interactions and brings forth randomness in interactions acting on each Ce moment. The typical spin-glass behavior of x = 0.31 originates in this random distribution of magnetic interactions.

Original language	English
Pages (from-to)	3231-3236
Number of pages	6
Journal	journal of the physical society of japan
Volume	72
Issue number	12
DOIs	https://doi.org/10.1143/JPSJ.72.3231
Publication status	Published - 2003 Dec 1

Keywords

Biquadratic interaction
CeBC
Specific heat
Spin-glass
ac-susceptibility
dc-susceptibility

ASJC Scopus subject areas

Physics and Astronomy(all)

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Tobo, A., Ishimoto, K., Konno, J., Ohoyama, K., Kaneko, K., Yamaguchi, Y., & Onodera, H. (2003). Magnetic properties of tetragonal Ce_1-xLu_xB ₂C₂ (0 ≤ x ≤ 0.31) compounds. journal of the physical society of japan, 72(12), 3231-3236. https://doi.org/10.1143/JPSJ.72.3231

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title = "Magnetic properties of tetragonal Ce1-xLuxB 2C2 (0 ≤ x ≤ 0.31) compounds",

abstract = "Specific heat, dc- and ac-magnetic susceptibility and magnetization measurements were performed on rare earth intermetallic compounds Ce 1-xLuxB2C2 (0 ≤ x ≤ 0.31) in order to elucidate the magnetic interaction in CeB2C2. In the process of the substitution of Ce by Lu in CeB2C2, the characteristics of magnetic transition change from a first-order transition to a second-order one. Furthermore, the spin-glass phase appears at Lu concentration x = 0.31. We suppose that the ferromagnetic (FM) and antiferromagnetic (AFM) interactions compete and nearly cancel out each other in CeB2C2, and hence that a biquadratic interaction might cause the first-order magnetic transition at TN. The Lu substitution breaks the competition between AFM and FM interactions and brings forth randomness in interactions acting on each Ce moment. The typical spin-glass behavior of x = 0.31 originates in this random distribution of magnetic interactions.",

keywords = "Biquadratic interaction, CeBC, Specific heat, Spin-glass, ac-susceptibility, dc-susceptibility",

author = "Aya Tobo and Kenichi Ishimoto and Junya Konno and Kenji Ohoyama and Koji Kaneko and Yasuo Yamaguchi and Hideya Onodera",

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T1 - Magnetic properties of tetragonal Ce1-xLuxB 2C2 (0 ≤ x ≤ 0.31) compounds

AU - Tobo, Aya

AU - Ishimoto, Kenichi

AU - Konno, Junya

AU - Ohoyama, Kenji

AU - Kaneko, Koji

AU - Yamaguchi, Yasuo

AU - Onodera, Hideya

PY - 2003/12/1

Y1 - 2003/12/1

N2 - Specific heat, dc- and ac-magnetic susceptibility and magnetization measurements were performed on rare earth intermetallic compounds Ce 1-xLuxB2C2 (0 ≤ x ≤ 0.31) in order to elucidate the magnetic interaction in CeB2C2. In the process of the substitution of Ce by Lu in CeB2C2, the characteristics of magnetic transition change from a first-order transition to a second-order one. Furthermore, the spin-glass phase appears at Lu concentration x = 0.31. We suppose that the ferromagnetic (FM) and antiferromagnetic (AFM) interactions compete and nearly cancel out each other in CeB2C2, and hence that a biquadratic interaction might cause the first-order magnetic transition at TN. The Lu substitution breaks the competition between AFM and FM interactions and brings forth randomness in interactions acting on each Ce moment. The typical spin-glass behavior of x = 0.31 originates in this random distribution of magnetic interactions.

AB - Specific heat, dc- and ac-magnetic susceptibility and magnetization measurements were performed on rare earth intermetallic compounds Ce 1-xLuxB2C2 (0 ≤ x ≤ 0.31) in order to elucidate the magnetic interaction in CeB2C2. In the process of the substitution of Ce by Lu in CeB2C2, the characteristics of magnetic transition change from a first-order transition to a second-order one. Furthermore, the spin-glass phase appears at Lu concentration x = 0.31. We suppose that the ferromagnetic (FM) and antiferromagnetic (AFM) interactions compete and nearly cancel out each other in CeB2C2, and hence that a biquadratic interaction might cause the first-order magnetic transition at TN. The Lu substitution breaks the competition between AFM and FM interactions and brings forth randomness in interactions acting on each Ce moment. The typical spin-glass behavior of x = 0.31 originates in this random distribution of magnetic interactions.

KW - Biquadratic interaction

KW - CeBC

KW - Specific heat

KW - Spin-glass

KW - ac-susceptibility

KW - dc-susceptibility

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