Transport properties under high pressure of antiferromagnet EuPt2 Si2 with unstable Eu valence

Y. Ikeda; A. Mitsuda; N. Ietaka; T. Mizushima; Y. Isikawa; T. Kuwai

doi:10.1016/j.jmmm.2006.10.211

Transport properties under high pressure of antiferromagnet EuPt₂ Si₂ with unstable Eu valence

Y. Ikeda, A. Mitsuda, N. Ietaka, T. Mizushima, Y. Isikawa, T. Kuwai^*

^*この論文の責任著者

物理学科

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

8 被引用数 (Scopus)

抄録

Electrical resistivity ρ (T) of the antiferromagnet EuPt₂ Si₂(T_N = 16 K) between 2 and 300 K under hydrostatic pressure up to 2.6 GPa is presented. With applying pressure, T_N monotonically shifts to the lower temperature range. Simultaneously, a characteristic upturn in ρ (T), which lies between 150 K and T_N at ambient pressure, moves to higher temperatures accompanying a broad peak on the lower temperature end. In addition, an extra logarithmic upturn around 20 K between 1.9 and 2.4 GPa was newly noticed. These results are brought by the competitive state between magnetic order, valence transformation and probably Kondo effect in this compound.

本文言語	英語
ページ（範囲）	e62-e64
ジャーナル	Journal of Magnetism and Magnetic Materials
巻	310
号	2 SUPPL. PART 1
DOI	https://doi.org/10.1016/j.jmmm.2006.10.211
出版ステータス	出版済み - 2007/03

ASJC Scopus 主題領域

電子材料、光学材料、および磁性材料
凝縮系物理学

文献へのアクセス

10.1016/j.jmmm.2006.10.211

引用スタイル

@article{6968e2208d014e5fba3d07dab7d1d886,

title = "Transport properties under high pressure of antiferromagnet EuPt2 Si2 with unstable Eu valence",

abstract = "Electrical resistivity ρ (T) of the antiferromagnet EuPt2 Si2(TN = 16 K) between 2 and 300 K under hydrostatic pressure up to 2.6 GPa is presented. With applying pressure, TN monotonically shifts to the lower temperature range. Simultaneously, a characteristic upturn in ρ (T), which lies between 150 K and TN at ambient pressure, moves to higher temperatures accompanying a broad peak on the lower temperature end. In addition, an extra logarithmic upturn around 20 K between 1.9 and 2.4 GPa was newly noticed. These results are brought by the competitive state between magnetic order, valence transformation and probably Kondo effect in this compound.",

keywords = "Antiferromagnetism, EuPt Si, Kondo effect, Valence instability",

author = "Y. Ikeda and A. Mitsuda and N. Ietaka and T. Mizushima and Y. Isikawa and T. Kuwai",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.211",

language = "英語",

volume = "310",

pages = "e62--e64",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "2 SUPPL. PART 1",

}

TY - JOUR

T1 - Transport properties under high pressure of antiferromagnet EuPt2 Si2 with unstable Eu valence

AU - Ikeda, Y.

AU - Mitsuda, A.

AU - Ietaka, N.

AU - Mizushima, T.

AU - Isikawa, Y.

AU - Kuwai, T.

PY - 2007/3

Y1 - 2007/3

N2 - Electrical resistivity ρ (T) of the antiferromagnet EuPt2 Si2(TN = 16 K) between 2 and 300 K under hydrostatic pressure up to 2.6 GPa is presented. With applying pressure, TN monotonically shifts to the lower temperature range. Simultaneously, a characteristic upturn in ρ (T), which lies between 150 K and TN at ambient pressure, moves to higher temperatures accompanying a broad peak on the lower temperature end. In addition, an extra logarithmic upturn around 20 K between 1.9 and 2.4 GPa was newly noticed. These results are brought by the competitive state between magnetic order, valence transformation and probably Kondo effect in this compound.

AB - Electrical resistivity ρ (T) of the antiferromagnet EuPt2 Si2(TN = 16 K) between 2 and 300 K under hydrostatic pressure up to 2.6 GPa is presented. With applying pressure, TN monotonically shifts to the lower temperature range. Simultaneously, a characteristic upturn in ρ (T), which lies between 150 K and TN at ambient pressure, moves to higher temperatures accompanying a broad peak on the lower temperature end. In addition, an extra logarithmic upturn around 20 K between 1.9 and 2.4 GPa was newly noticed. These results are brought by the competitive state between magnetic order, valence transformation and probably Kondo effect in this compound.

KW - Antiferromagnetism

KW - EuPt Si

KW - Kondo effect

KW - Valence instability

UR - http://www.scopus.com/inward/record.url?scp=33847291352&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2006.10.211

DO - 10.1016/j.jmmm.2006.10.211

M3 - 学術論文

AN - SCOPUS:33847291352

SN - 0304-8853

VL - 310

SP - e62-e64

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

ER -

Transport properties under high pressure of antiferromagnet EuPt2 Si2 with unstable Eu valence

抄録

ASJC Scopus 主題領域

文献へのアクセス

フィンガープリント

引用スタイル

Transport properties under high pressure of antiferromagnet EuPt₂ Si₂ with unstable Eu valence