Study of the influence of the magnetoelastic energy in drivingthe magnetic and structural transition in TbCu

Journal Article · Fri Nov 15 04:00:00 EST 1991 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.350070· OSTI ID:5159156

Ibarra, M R; Marquina, C ^[1]; Pavlovic, A S ^[2]; Ritter, C ^[3]

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1. Laboratorio de Magnetismo, Facultad de Ciencias-ICMA, Universidad de Zaragoza-CSIC,50009 Zaragoza (Spain)
2. Department of Physics, West Virginia University, Morgantown, West Virginia (USA)
3. Institut Laue-Langevin ILL, 156X, 38042 Grenoble (France)

TbCu suffers a structural transformation at {ital T}{sub {ital N}} = 117 K, with the establishment of a collinear antiferromagnetic order. On the other hand, YCu is a Pauli paramagnet, which also transforms structurally at {ital T}{sub {ital s}} = 150 K. In order to test the influence of the magnetoelastic energy as the driving mechanism of the transition in TbCu, we have performed neutron diffraction experiments on the compound Tb{sub 0.6}Y{sub 0.4}Cu. From the thermal evolution of the structural and magnetic peaks, we have observed that both, structural ({ital T}{sub {ital s}}) and magnetic transitions ({ital T}{sub {ital N}}), occur at different temperatures. This separation in the transition temperatures constitutes a strong indication that magnetoelastic energy is not responsible for the transition in TbCu, in spite of the large magnetostriction observed at low temperatures at the metamagnetic field induced transition.

• OSTI ID: 5159156
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 70:10; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ANTIFERROMAGNETISM
COPPER COMPOUNDS
CRYSTAL-PHASE TRANSFORMATIONS
INTERMETALLIC COMPOUNDS
MAGNETIC PROPERTIES
MAGNETISM
MAGNETO-THERMAL EFFECTS
MAGNETOSTRICTION
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
TEMPERATURE EFFECTS
TERBIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS