Low-temperature properties of the dilute quadrupolar system Pr xla1-xPb3

Tatsuya Kawae, K. Yurue, K. Kinoshita, N. Tateiwa, K. Takeda, T. Kitai

Research output: Contribution to journalArticle

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Abstract

We have studied the low-temperature properties of PrxLa 1-xPb3 with the ground state of a non-Kramers Γ 3 doublet for the Pr concentration for 0≤x≤1. From the concentration dependence of the specific heat, the quadrupolar ordering, which is observed at TQ = 0.4 K in PrPb3, is concluded to persist only for x∼0.98. For a wide range of Pr concentration for 0.1≤x≤0.95, the specific heat shows a T-linear variation below 0.5 K with a large coefficient, which is almost reproduced by the model for amorphous materials with a random configuration of two-level system. For x≤0.05, C/T shows a non-Fermi liquid behavior with the monotonous enhancement of C/T with decreasing temperature, which is probably caused by Kondo effect arising from the correlation between the Γ3 moments and the conduction electrons.

Original languageEnglish
Pages (from-to)100-101
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberI
DOIs
Publication statusPublished - Jan 1 2004

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Low temperature properties
Specific heat
Kondo effect
specific heat
Ground state
amorphous materials
conduction electrons
Electrons
Liquids
moments
ground state
augmentation
coefficients
liquids
configurations
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Low-temperature properties of the dilute quadrupolar system Pr xla1-xPb3 . / Kawae, Tatsuya; Yurue, K.; Kinoshita, K.; Tateiwa, N.; Takeda, K.; Kitai, T.

In: Journal of Magnetism and Magnetic Materials, Vol. 272-276, No. I, 01.01.2004, p. 100-101.

Research output: Contribution to journalArticle

Kawae, Tatsuya ; Yurue, K. ; Kinoshita, K. ; Tateiwa, N. ; Takeda, K. ; Kitai, T. / Low-temperature properties of the dilute quadrupolar system Pr xla1-xPb3 In: Journal of Magnetism and Magnetic Materials. 2004 ; Vol. 272-276, No. I. pp. 100-101.
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AU - Takeda, K.

AU - Kitai, T.

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N2 - We have studied the low-temperature properties of PrxLa 1-xPb3 with the ground state of a non-Kramers Γ 3 doublet for the Pr concentration for 0≤x≤1. From the concentration dependence of the specific heat, the quadrupolar ordering, which is observed at TQ = 0.4 K in PrPb3, is concluded to persist only for x∼0.98. For a wide range of Pr concentration for 0.1≤x≤0.95, the specific heat shows a T-linear variation below 0.5 K with a large coefficient, which is almost reproduced by the model for amorphous materials with a random configuration of two-level system. For x≤0.05, C/T shows a non-Fermi liquid behavior with the monotonous enhancement of C/T with decreasing temperature, which is probably caused by Kondo effect arising from the correlation between the Γ3 moments and the conduction electrons.

AB - We have studied the low-temperature properties of PrxLa 1-xPb3 with the ground state of a non-Kramers Γ 3 doublet for the Pr concentration for 0≤x≤1. From the concentration dependence of the specific heat, the quadrupolar ordering, which is observed at TQ = 0.4 K in PrPb3, is concluded to persist only for x∼0.98. For a wide range of Pr concentration for 0.1≤x≤0.95, the specific heat shows a T-linear variation below 0.5 K with a large coefficient, which is almost reproduced by the model for amorphous materials with a random configuration of two-level system. For x≤0.05, C/T shows a non-Fermi liquid behavior with the monotonous enhancement of C/T with decreasing temperature, which is probably caused by Kondo effect arising from the correlation between the Γ3 moments and the conduction electrons.

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