Possibility of the Kondo effect in diluted EuPd2Si2 systems with constant lattice volume

T. Kuwai; H. Suzuki; T. Saitoh; T. Nanbu; A. Mitsuda; T. Mizushima; Y. Isikawa

doi:10.1016/j.jmmm.2006.10.260

Possibility of the Kondo effect in diluted EuPd₂Si₂ systems with constant lattice volume

T. Kuwai, H. Suzuki, T. Saitoh, T. Nanbu, A. Mitsuda, T. Mizushima, Y. Isikawa

Condensed Matter Physics

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Abstract

Specific heat C and electrical resistivity ρ between 0.2 and 300 K were investigated for Eu-diluted alloys replacing by the (La_0.67Y_0.33) component with almost constant lattice volume, on a well-known valence-transition (VT) material EuPd₂Si₂. The inter-site cooperative effect bringing the sharp VT at 150 K in EuPd₂Si₂ was revealed to be disintegrated by the dilution beyond 25 at% for Eu from the present results in both the quantities. Moreover, a logarithmic upturn in ρ below about 20 K was recognized for the samples with the dilution beyond 25 at%, correspondingly with the steep enhancement in the magnetic part of C/T reaching 500 mJ/K² Eu-mol toward the zero temperature. Discussion from the standpoint of the Kondo effect is briefly developed for the present Eu-diluted alloys.

Original language	English
Pages (from-to)	e68-e70
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.260
Publication status	Published - Mar 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2006.10.260

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title = "Possibility of the Kondo effect in diluted EuPd2Si2 systems with constant lattice volume",

abstract = "Specific heat C and electrical resistivity ρ between 0.2 and 300 K were investigated for Eu-diluted alloys replacing by the (La0.67Y0.33) component with almost constant lattice volume, on a well-known valence-transition (VT) material EuPd2Si2. The inter-site cooperative effect bringing the sharp VT at 150 K in EuPd2Si2 was revealed to be disintegrated by the dilution beyond 25 at% for Eu from the present results in both the quantities. Moreover, a logarithmic upturn in ρ below about 20 K was recognized for the samples with the dilution beyond 25 at%, correspondingly with the steep enhancement in the magnetic part of C/T reaching 500 mJ/K2 Eu-mol toward the zero temperature. Discussion from the standpoint of the Kondo effect is briefly developed for the present Eu-diluted alloys.",

author = "T. Kuwai and H. Suzuki and T. Saitoh and T. Nanbu and A. Mitsuda and T. Mizushima and Y. Isikawa",

year = "2007",

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TY - JOUR

T1 - Possibility of the Kondo effect in diluted EuPd2Si2 systems with constant lattice volume

AU - Kuwai, T.

AU - Suzuki, H.

AU - Saitoh, T.

AU - Nanbu, T.

AU - Mitsuda, A.

AU - Mizushima, T.

AU - Isikawa, Y.

PY - 2007/3

Y1 - 2007/3

N2 - Specific heat C and electrical resistivity ρ between 0.2 and 300 K were investigated for Eu-diluted alloys replacing by the (La0.67Y0.33) component with almost constant lattice volume, on a well-known valence-transition (VT) material EuPd2Si2. The inter-site cooperative effect bringing the sharp VT at 150 K in EuPd2Si2 was revealed to be disintegrated by the dilution beyond 25 at% for Eu from the present results in both the quantities. Moreover, a logarithmic upturn in ρ below about 20 K was recognized for the samples with the dilution beyond 25 at%, correspondingly with the steep enhancement in the magnetic part of C/T reaching 500 mJ/K2 Eu-mol toward the zero temperature. Discussion from the standpoint of the Kondo effect is briefly developed for the present Eu-diluted alloys.

AB - Specific heat C and electrical resistivity ρ between 0.2 and 300 K were investigated for Eu-diluted alloys replacing by the (La0.67Y0.33) component with almost constant lattice volume, on a well-known valence-transition (VT) material EuPd2Si2. The inter-site cooperative effect bringing the sharp VT at 150 K in EuPd2Si2 was revealed to be disintegrated by the dilution beyond 25 at% for Eu from the present results in both the quantities. Moreover, a logarithmic upturn in ρ below about 20 K was recognized for the samples with the dilution beyond 25 at%, correspondingly with the steep enhancement in the magnetic part of C/T reaching 500 mJ/K2 Eu-mol toward the zero temperature. Discussion from the standpoint of the Kondo effect is briefly developed for the present Eu-diluted alloys.

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

ER -

Possibility of the Kondo effect in diluted EuPd₂Si₂ systems with constant lattice volume

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