Anisotropic thermal expansion in RECu2-compounds

A. Lindbaum; E. Gratz; M. Rotter

Anisotropic thermal expansion in RECu₂-compounds

A. Lindbaum^*
, E. Gratz
, M. Rotter

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

The lattice parameters a, b and c of TmCu₂, GdCu₂ and YCu₂ have been measured in the temperature range from 4.2 K up to 300 K using X-ray powder diffraction. The influence of the crystal field on the thermal expansion in TmCu₂ in the paramagnetic region (TmCu₂ orders magnetically at T_N = 6.3 K) has been determined by comparing the thermal expansion of the nonmagnetic YCu₂ with that of TmCu₂ . The data thus obtained are compared with a theoretical model given in Gratz et. al. 1993 using a set of crystal field parameters published by Gabbiness et al. 1992. GdCu₂, for which the influence of the crystal field can be neglected (Gd³⁺ : L = 0), has also been investigated in order to study the influence of the exchange interaction below the magnetic ordering temperature of 42K.

Original language	English
Pages (from-to)	467-472
Number of pages	6
Journal	Materials Science Forum
Volume	166-169
Issue number	pt 2
Publication status	Published - 1994
Externally published	Yes
Event	Proceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2) - Vienna, Austria Duration: 25 Sept 1993 → 28 Sept 1993

Cite this

@article{8e7dde94472c4478aab16f9ea931a9ac,

title = "Anisotropic thermal expansion in RECu2-compounds",

abstract = "The lattice parameters a, b and c of TmCu2, GdCu2 and YCu2 have been measured in the temperature range from 4.2 K up to 300 K using X-ray powder diffraction. The influence of the crystal field on the thermal expansion in TmCu2 in the paramagnetic region (TmCu2 orders magnetically at TN = 6.3 K) has been determined by comparing the thermal expansion of the nonmagnetic YCu2 with that of TmCu2 . The data thus obtained are compared with a theoretical model given in Gratz et. al. 1993 using a set of crystal field parameters published by Gabbiness et al. 1992. GdCu2, for which the influence of the crystal field can be neglected (Gd3+ : L = 0), has also been investigated in order to study the influence of the exchange interaction below the magnetic ordering temperature of 42K.",

author = "A. Lindbaum and E. Gratz and M. Rotter",

year = "1994",

language = "English",

volume = "166-169",

pages = "467--472",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd",

number = "pt 2",

note = "Proceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2) ; Conference date: 25-09-1993 Through 28-09-1993",

}

TY - JOUR

T1 - Anisotropic thermal expansion in RECu2-compounds

AU - Lindbaum, A.

AU - Gratz, E.

AU - Rotter, M.

PY - 1994

Y1 - 1994

N2 - The lattice parameters a, b and c of TmCu2, GdCu2 and YCu2 have been measured in the temperature range from 4.2 K up to 300 K using X-ray powder diffraction. The influence of the crystal field on the thermal expansion in TmCu2 in the paramagnetic region (TmCu2 orders magnetically at TN = 6.3 K) has been determined by comparing the thermal expansion of the nonmagnetic YCu2 with that of TmCu2 . The data thus obtained are compared with a theoretical model given in Gratz et. al. 1993 using a set of crystal field parameters published by Gabbiness et al. 1992. GdCu2, for which the influence of the crystal field can be neglected (Gd3+ : L = 0), has also been investigated in order to study the influence of the exchange interaction below the magnetic ordering temperature of 42K.

AB - The lattice parameters a, b and c of TmCu2, GdCu2 and YCu2 have been measured in the temperature range from 4.2 K up to 300 K using X-ray powder diffraction. The influence of the crystal field on the thermal expansion in TmCu2 in the paramagnetic region (TmCu2 orders magnetically at TN = 6.3 K) has been determined by comparing the thermal expansion of the nonmagnetic YCu2 with that of TmCu2 . The data thus obtained are compared with a theoretical model given in Gratz et. al. 1993 using a set of crystal field parameters published by Gabbiness et al. 1992. GdCu2, for which the influence of the crystal field can be neglected (Gd3+ : L = 0), has also been investigated in order to study the influence of the exchange interaction below the magnetic ordering temperature of 42K.

UR - https://www.scopus.com/pages/publications/0028698082

M3 - Conference article

AN - SCOPUS:0028698082

SN - 0255-5476

VL - 166-169

SP - 467

EP - 472

JO - Materials Science Forum

JF - Materials Science Forum

IS - pt 2

T2 - Proceedings of the 3rd European Powder Diffraction Conference. Part 2 (of 2)

Y2 - 25 September 1993 through 28 September 1993

ER -

Anisotropic thermal expansion in RECu₂-compounds

Abstract

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