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

IMR - Materials Property Division

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

8 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	e62-e64
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.211
Publication status	Published - 2007 Mar

Keywords

Antiferromagnetism
EuPt Si
Kondo effect
Valence instability

Access to Document

10.1016/j.jmmm.2006.10.211

Cite this

@article{5be4f5c3901f4620a6f2853901fd7b42,

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 = "English",

volume = "310",

pages = "e62--e64",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

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

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

U2 - 10.1016/j.jmmm.2006.10.211

DO - 10.1016/j.jmmm.2006.10.211

M3 - Article

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this