Magnetic properties of nickel and platinum quaternary borocarbides

L. Cristofolini; A. Lappas; Kosmas Prassides; K. Vavekis; M. Buchgeister

Magnetic properties of nickel and platinum quaternary borocarbides

L. Cristofolini, A. Lappas, Kosmas Prassides, K. Vavekis, M. Buchgeister

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

Abstract

The zero-field μ⁺SR technique is employed to study the magnetic properties of the non-superconducting borocarbides Sm_1-xLu_xNi₂B₂C (x = 0.0, 0.2) and NdPt_1.5Au_0.6B₂C. Coherent ordering of the Sm electronic moments appears below T_N = 9.86(3) and 4.15(3) K for the x = 0.0 and 0.2 compositions, respectively. No long range order of the Nd³⁺ moments is found in NdPt_1.5Au_0.6B₂C down to 80 mK. Freezing of the electronic moments into a spin-glass state occurs at T_f ≈ 1.2 K. A stretched exponential decay of the μ⁺ spin polarisation is observed above T_f with the exponent β smoothly decreasing on approaching T_f from above, reminiscent of the behaviour in other spin glasses.

Original language	English
Pages (from-to)	61-66
Number of pages	6
Journal	Hyperfine Interactions
Volume	104
Issue number	1-4
Publication status	Published - 1997 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

Cite this

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title = "Magnetic properties of nickel and platinum quaternary borocarbides",

abstract = "The zero-field μ+SR technique is employed to study the magnetic properties of the non-superconducting borocarbides Sm1-xLuxNi2B2C (x = 0.0, 0.2) and NdPt1.5Au0.6B2C. Coherent ordering of the Sm electronic moments appears below TN = 9.86(3) and 4.15(3) K for the x = 0.0 and 0.2 compositions, respectively. No long range order of the Nd3+ moments is found in NdPt1.5Au0.6B2C down to 80 mK. Freezing of the electronic moments into a spin-glass state occurs at Tf ≈ 1.2 K. A stretched exponential decay of the μ+ spin polarisation is observed above Tf with the exponent β smoothly decreasing on approaching Tf from above, reminiscent of the behaviour in other spin glasses.",

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T1 - Magnetic properties of nickel and platinum quaternary borocarbides

AU - Cristofolini, L.

AU - Lappas, A.

AU - Prassides, Kosmas

AU - Vavekis, K.

AU - Buchgeister, M.

PY - 1997/12/1

Y1 - 1997/12/1

N2 - The zero-field μ+SR technique is employed to study the magnetic properties of the non-superconducting borocarbides Sm1-xLuxNi2B2C (x = 0.0, 0.2) and NdPt1.5Au0.6B2C. Coherent ordering of the Sm electronic moments appears below TN = 9.86(3) and 4.15(3) K for the x = 0.0 and 0.2 compositions, respectively. No long range order of the Nd3+ moments is found in NdPt1.5Au0.6B2C down to 80 mK. Freezing of the electronic moments into a spin-glass state occurs at Tf ≈ 1.2 K. A stretched exponential decay of the μ+ spin polarisation is observed above Tf with the exponent β smoothly decreasing on approaching Tf from above, reminiscent of the behaviour in other spin glasses.

AB - The zero-field μ+SR technique is employed to study the magnetic properties of the non-superconducting borocarbides Sm1-xLuxNi2B2C (x = 0.0, 0.2) and NdPt1.5Au0.6B2C. Coherent ordering of the Sm electronic moments appears below TN = 9.86(3) and 4.15(3) K for the x = 0.0 and 0.2 compositions, respectively. No long range order of the Nd3+ moments is found in NdPt1.5Au0.6B2C down to 80 mK. Freezing of the electronic moments into a spin-glass state occurs at Tf ≈ 1.2 K. A stretched exponential decay of the μ+ spin polarisation is observed above Tf with the exponent β smoothly decreasing on approaching Tf from above, reminiscent of the behaviour in other spin glasses.

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JO - Hyperfine Interaction

JF - Hyperfine Interaction

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Magnetic properties of nickel and platinum quaternary borocarbides

Abstract

ASJC Scopus subject areas

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