μ SR study of thiospinel CuCrZrS4

Hiroyuki S. Suzuki; Takao Furubayashi; Yusuke Kawashima; Shoichi Nagata; Takao Suzuki; Takayuki Kawamata; Isao Watanabe; Teiichiro Matsuzaki; Alex Amato

doi:10.1016/j.physb.2008.11.115

μ SR study of thiospinel CuCrZrS₄

Hiroyuki S. Suzuki, Takao Furubayashi, Yusuke Kawashima, Shoichi Nagata, Takao Suzuki, Takayuki Kawamata, Isao Watanabe, Teiichiro Matsuzaki, Alex Amato

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

We report the results of μ SR measurement of the re-entrant spin-glass thiospinel CuCrZrS₄. We have observed a relatively small enhancement of the relaxation rate at T_C ∼ 60 K but no oscillations in the time spectra in the first magnetic phase between T_C and T_f ∼ 7 K, suggesting that the first magnetic phase is not a long-range ordering state. A fast depolarization component in ZF-μ SR appears around 40 K and develops accompanied by the rapid increase of its relaxation rate with decreasing temperature down to T_f. The fast depolarization component is interpreted as the signature of the magnetic correlation attributed to the re-entrant spin-glass behavior. At all the measured temperatures, there remain relaxations even at high magnetic fields, revealing a dynamical local field due to strong magnetic correlations.

Original language	English
Pages (from-to)	649-651
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	404
Issue number	5-7
DOIs	https://doi.org/10.1016/j.physb.2008.11.115
Publication status	Published - 2009 Apr 15
Externally published	Yes

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Keywords

Large negative magnetoresistance
Re-entrant spin-glass
Thiospinel

ASJC Scopus subject areas

Condensed Matter Physics
Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Cite this

Suzuki, H. S., Furubayashi, T., Kawashima, Y., Nagata, S., Suzuki, T., Kawamata, T., ... Amato, A. (2009). μ SR study of thiospinel CuCrZrS₄. Physica B: Condensed Matter, 404(5-7), 649-651. https://doi.org/10.1016/j.physb.2008.11.115

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title = "μ SR study of thiospinel CuCrZrS4",

abstract = "We report the results of μ SR measurement of the re-entrant spin-glass thiospinel CuCrZrS4. We have observed a relatively small enhancement of the relaxation rate at TC ∼ 60 K but no oscillations in the time spectra in the first magnetic phase between TC and Tf ∼ 7 K, suggesting that the first magnetic phase is not a long-range ordering state. A fast depolarization component in ZF-μ SR appears around 40 K and develops accompanied by the rapid increase of its relaxation rate with decreasing temperature down to Tf. The fast depolarization component is interpreted as the signature of the magnetic correlation attributed to the re-entrant spin-glass behavior. At all the measured temperatures, there remain relaxations even at high magnetic fields, revealing a dynamical local field due to strong magnetic correlations.",

keywords = "Large negative magnetoresistance, Re-entrant spin-glass, Thiospinel",

author = "Suzuki, {Hiroyuki S.} and Takao Furubayashi and Yusuke Kawashima and Shoichi Nagata and Takao Suzuki and Takayuki Kawamata and Isao Watanabe and Teiichiro Matsuzaki and Alex Amato",

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AU - Suzuki, Hiroyuki S.

AU - Furubayashi, Takao

AU - Kawashima, Yusuke

AU - Nagata, Shoichi

AU - Suzuki, Takao

AU - Kawamata, Takayuki

AU - Watanabe, Isao

AU - Matsuzaki, Teiichiro

AU - Amato, Alex

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N2 - We report the results of μ SR measurement of the re-entrant spin-glass thiospinel CuCrZrS4. We have observed a relatively small enhancement of the relaxation rate at TC ∼ 60 K but no oscillations in the time spectra in the first magnetic phase between TC and Tf ∼ 7 K, suggesting that the first magnetic phase is not a long-range ordering state. A fast depolarization component in ZF-μ SR appears around 40 K and develops accompanied by the rapid increase of its relaxation rate with decreasing temperature down to Tf. The fast depolarization component is interpreted as the signature of the magnetic correlation attributed to the re-entrant spin-glass behavior. At all the measured temperatures, there remain relaxations even at high magnetic fields, revealing a dynamical local field due to strong magnetic correlations.

AB - We report the results of μ SR measurement of the re-entrant spin-glass thiospinel CuCrZrS4. We have observed a relatively small enhancement of the relaxation rate at TC ∼ 60 K but no oscillations in the time spectra in the first magnetic phase between TC and Tf ∼ 7 K, suggesting that the first magnetic phase is not a long-range ordering state. A fast depolarization component in ZF-μ SR appears around 40 K and develops accompanied by the rapid increase of its relaxation rate with decreasing temperature down to Tf. The fast depolarization component is interpreted as the signature of the magnetic correlation attributed to the re-entrant spin-glass behavior. At all the measured temperatures, there remain relaxations even at high magnetic fields, revealing a dynamical local field due to strong magnetic correlations.

KW - Large negative magnetoresistance

KW - Re-entrant spin-glass

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10.1016/j.physb.2008.11.115