Suppression of the enhanced paramagnetic thermal expansion of YMn2 by Fe substitutions

I. S. Dubenko; E. Gratz; A. Lindbaum; A. S. Markosyan; S. A. Markossian; V. E. Rodimin; G. Wiesinger

doi:10.1016/S0304-8853(97)00709-9

Suppression of the enhanced paramagnetic thermal expansion of YMn₂ by Fe substitutions

I. S. Dubenko, E. Gratz, A. Lindbaum, A. S. Markosyan, S. A. Markossian, V. E. Rodimin, G. Wiesinger

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

3 Citations (Scopus)

Abstract

The thermal expansion coefficient α of YMn₂ just above its Néel temperature (T_N = 90 K) is about 45 × 10^-6 K^-1, it takes a value of 53 × 10^-6 K^-1 at room temperature and passes through a maximum around 350 K. This unusual behaviour of α(T) and the higher value (if compared with other known spin fluctuation systems such as YCo₂) has been attributed to electronic instabilities of the Mn ions. In the present investigation it is shown that - when changing the environment of an individual Mn ion by substituting Mn by Fe - α decreases very quickly with increasing Fe content. This has been considered as a proof that the electronic instabilities of the Mn ions depend very sensitively on the surroundings.

Original language	English
Pages (from-to)	571-572
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	177-181
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0304-8853(97)00709-9
Publication status	Published - Jan 1998
Externally published	Yes

Keywords

Manganese compounds
Spin fluctuations
Thermal expansion

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10.1016/S0304-8853(97)00709-9

Cite this

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title = "Suppression of the enhanced paramagnetic thermal expansion of YMn2 by Fe substitutions",

abstract = "The thermal expansion coefficient α of YMn2 just above its N{\'e}el temperature (TN = 90 K) is about 45 × 10-6 K-1, it takes a value of 53 × 10-6 K-1 at room temperature and passes through a maximum around 350 K. This unusual behaviour of α(T) and the higher value (if compared with other known spin fluctuation systems such as YCo2) has been attributed to electronic instabilities of the Mn ions. In the present investigation it is shown that - when changing the environment of an individual Mn ion by substituting Mn by Fe - α decreases very quickly with increasing Fe content. This has been considered as a proof that the electronic instabilities of the Mn ions depend very sensitively on the surroundings.",

keywords = "Manganese compounds, Spin fluctuations, Thermal expansion",

author = "Dubenko, {I. S.} and E. Gratz and A. Lindbaum and Markosyan, {A. S.} and Markossian, {S. A.} and Rodimin, {V. E.} and G. Wiesinger",

year = "1998",

month = jan,

doi = "10.1016/S0304-8853(97)00709-9",

language = "English",

volume = "177-181",

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journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

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TY - JOUR

T1 - Suppression of the enhanced paramagnetic thermal expansion of YMn2 by Fe substitutions

AU - Dubenko, I. S.

AU - Gratz, E.

AU - Lindbaum, A.

AU - Markosyan, A. S.

AU - Markossian, S. A.

AU - Rodimin, V. E.

AU - Wiesinger, G.

PY - 1998/1

Y1 - 1998/1

N2 - The thermal expansion coefficient α of YMn2 just above its Néel temperature (TN = 90 K) is about 45 × 10-6 K-1, it takes a value of 53 × 10-6 K-1 at room temperature and passes through a maximum around 350 K. This unusual behaviour of α(T) and the higher value (if compared with other known spin fluctuation systems such as YCo2) has been attributed to electronic instabilities of the Mn ions. In the present investigation it is shown that - when changing the environment of an individual Mn ion by substituting Mn by Fe - α decreases very quickly with increasing Fe content. This has been considered as a proof that the electronic instabilities of the Mn ions depend very sensitively on the surroundings.

AB - The thermal expansion coefficient α of YMn2 just above its Néel temperature (TN = 90 K) is about 45 × 10-6 K-1, it takes a value of 53 × 10-6 K-1 at room temperature and passes through a maximum around 350 K. This unusual behaviour of α(T) and the higher value (if compared with other known spin fluctuation systems such as YCo2) has been attributed to electronic instabilities of the Mn ions. In the present investigation it is shown that - when changing the environment of an individual Mn ion by substituting Mn by Fe - α decreases very quickly with increasing Fe content. This has been considered as a proof that the electronic instabilities of the Mn ions depend very sensitively on the surroundings.

KW - Manganese compounds

KW - Spin fluctuations

KW - Thermal expansion

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U2 - 10.1016/S0304-8853(97)00709-9

DO - 10.1016/S0304-8853(97)00709-9

M3 - Article

AN - SCOPUS:0031656386

SN - 0304-8853

VL - 177-181

SP - 571

EP - 572

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - PART 1

ER -

Suppression of the enhanced paramagnetic thermal expansion of YMn₂ by Fe substitutions

Abstract

Keywords

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