Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2

G. Liang, H. Xi, E. Roberts, T. Binford, K. Mochizuki, J. T. Markert, Mark Croft

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Abstract

Lattice, Ce-L3 edge, resistivity, and magnetic susceptibility measurements have been carried out on the polycrystalline Ce1-xLaxMn2Si2 system (0≤x≤1) to study the interplay between Mn 3d-host magnetism and Kondo-type Ce-spin fluctuations. As x increases, the system varies gradually from a Ce mixed-valent system with 3d-host antiferromagnetism (at x=0) to a nearly trivalent system with strong 3d-host ferromagnetism (near x=1). In the antiferromagnetic (AF) phase region (0≤x≤0.5), the Neel temperature TN decreases with the increase of x, manifesting the weakening of the host AF field. Impurity Kondo behavior is observed at x=0.05, indicating that the low-temperature coherence state in CeMn2Si2 can be destroyed by "Kondo holes" which are created by very small substitution of La for Ce. The susceptibility and resistivity results suggest that the impurity Kondo effect in the 0.1 ≤ x ≤ 0.5 samples is partially suppressed by a nonvanishing ferromagnetic (FM) field component; whereas the phononlike behavior of the resistivity curves in the Mn-host FM-phase region (0.5 < x ≤ 1.0) supports our previous proposal that the Kondo-type Ce-spin fluctuations can be effectively quenched by a strong 3d-host FM field.

Original languageEnglish (US)
Pages (from-to)4924-4926
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2B
StatePublished - Apr 15 1997

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valence
magnetic permeability
electrical resistivity
impurities
Kondo effect
antiferromagnetism
neel temperature
ferromagnetism
proposals
substitutes
curves

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Liang, G., Xi, H., Roberts, E., Binford, T., Mochizuki, K., Markert, J. T., & Croft, M. (1997). Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2. Journal of Applied Physics, 81(8 PART 2B), 4924-4926.
Liang, G. ; Xi, H. ; Roberts, E. ; Binford, T. ; Mochizuki, K. ; Markert, J. T. ; Croft, Mark. / Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2. In: Journal of Applied Physics. 1997 ; Vol. 81, No. 8 PART 2B. pp. 4924-4926.
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abstract = "Lattice, Ce-L3 edge, resistivity, and magnetic susceptibility measurements have been carried out on the polycrystalline Ce1-xLaxMn2Si2 system (0≤x≤1) to study the interplay between Mn 3d-host magnetism and Kondo-type Ce-spin fluctuations. As x increases, the system varies gradually from a Ce mixed-valent system with 3d-host antiferromagnetism (at x=0) to a nearly trivalent system with strong 3d-host ferromagnetism (near x=1). In the antiferromagnetic (AF) phase region (0≤x≤0.5), the Neel temperature TN decreases with the increase of x, manifesting the weakening of the host AF field. Impurity Kondo behavior is observed at x=0.05, indicating that the low-temperature coherence state in CeMn2Si2 can be destroyed by {"}Kondo holes{"} which are created by very small substitution of La for Ce. The susceptibility and resistivity results suggest that the impurity Kondo effect in the 0.1 ≤ x ≤ 0.5 samples is partially suppressed by a nonvanishing ferromagnetic (FM) field component; whereas the phononlike behavior of the resistivity curves in the Mn-host FM-phase region (0.5 < x ≤ 1.0) supports our previous proposal that the Kondo-type Ce-spin fluctuations can be effectively quenched by a strong 3d-host FM field.",
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Liang, G, Xi, H, Roberts, E, Binford, T, Mochizuki, K, Markert, JT & Croft, M 1997, 'Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2', Journal of Applied Physics, vol. 81, no. 8 PART 2B, pp. 4924-4926.

Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2. / Liang, G.; Xi, H.; Roberts, E.; Binford, T.; Mochizuki, K.; Markert, J. T.; Croft, Mark.

In: Journal of Applied Physics, Vol. 81, No. 8 PART 2B, 15.04.1997, p. 4924-4926.

Research output: Contribution to journalArticle

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T1 - Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2

AU - Liang, G.

AU - Xi, H.

AU - Roberts, E.

AU - Binford, T.

AU - Mochizuki, K.

AU - Markert, J. T.

AU - Croft, Mark

PY - 1997/4/15

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N2 - Lattice, Ce-L3 edge, resistivity, and magnetic susceptibility measurements have been carried out on the polycrystalline Ce1-xLaxMn2Si2 system (0≤x≤1) to study the interplay between Mn 3d-host magnetism and Kondo-type Ce-spin fluctuations. As x increases, the system varies gradually from a Ce mixed-valent system with 3d-host antiferromagnetism (at x=0) to a nearly trivalent system with strong 3d-host ferromagnetism (near x=1). In the antiferromagnetic (AF) phase region (0≤x≤0.5), the Neel temperature TN decreases with the increase of x, manifesting the weakening of the host AF field. Impurity Kondo behavior is observed at x=0.05, indicating that the low-temperature coherence state in CeMn2Si2 can be destroyed by "Kondo holes" which are created by very small substitution of La for Ce. The susceptibility and resistivity results suggest that the impurity Kondo effect in the 0.1 ≤ x ≤ 0.5 samples is partially suppressed by a nonvanishing ferromagnetic (FM) field component; whereas the phononlike behavior of the resistivity curves in the Mn-host FM-phase region (0.5 < x ≤ 1.0) supports our previous proposal that the Kondo-type Ce-spin fluctuations can be effectively quenched by a strong 3d-host FM field.

AB - Lattice, Ce-L3 edge, resistivity, and magnetic susceptibility measurements have been carried out on the polycrystalline Ce1-xLaxMn2Si2 system (0≤x≤1) to study the interplay between Mn 3d-host magnetism and Kondo-type Ce-spin fluctuations. As x increases, the system varies gradually from a Ce mixed-valent system with 3d-host antiferromagnetism (at x=0) to a nearly trivalent system with strong 3d-host ferromagnetism (near x=1). In the antiferromagnetic (AF) phase region (0≤x≤0.5), the Neel temperature TN decreases with the increase of x, manifesting the weakening of the host AF field. Impurity Kondo behavior is observed at x=0.05, indicating that the low-temperature coherence state in CeMn2Si2 can be destroyed by "Kondo holes" which are created by very small substitution of La for Ce. The susceptibility and resistivity results suggest that the impurity Kondo effect in the 0.1 ≤ x ≤ 0.5 samples is partially suppressed by a nonvanishing ferromagnetic (FM) field component; whereas the phononlike behavior of the resistivity curves in the Mn-host FM-phase region (0.5 < x ≤ 1.0) supports our previous proposal that the Kondo-type Ce-spin fluctuations can be effectively quenched by a strong 3d-host FM field.

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Liang G, Xi H, Roberts E, Binford T, Mochizuki K, Markert JT et al. Lattice, Ce-L3 valence, transport, and magnetic results on mixed-valent/Kondo system Ce1-xLaxMn2Si2. Journal of Applied Physics. 1997 Apr 15;81(8 PART 2B):4924-4926.