MAGNETIC PHASE-TRANSITIONS IN GD3CO / BARANOV NV,ANDREEV AV,KOZLOV AI,KVASHNIN GM,NAKOTTE H,KATORI HA,GOTO T // JOURNAL OF ALLOYS AND COMPOUNDS. - 1993. - V. 202, l. . - P. 215-224.

ISSN/EISSN:

0925-8388 / нет данных

Type:

Article

Abstract:

Magnetization, electrical resistivity, thermal expansion, magnetostriction and sound velocity were measured for Gd3Co single crystals. The compound has an orthorhombic Fe3C-type crystal structure and exhibits an antiferromagnetic arrangement of Gd magnetic moments below TN = 131 K. First-order phase transitions from the antiferromagnetic to the forced ferromagnetic state are observed along the b and c axes at a critical field H(c) almost-equal-to 0.8 T. Along the a axis, Gd3Co also becomes a forced ferromagnet at approximately 1.5 T, but the magnetization process occurs by the rotation of Gd magnetic moments. An antiferromagnetic ordering of the Co sublattice appears below T{*} = 3.7 K Anisotropy of the electrical resistivity is found below T(N). The field-induced antiferromagnetic to ferromagnetic transitions are accompanied by large magnetoresistance (DELTArho/rho0 almost-equal-to -50\%) and magnetostriction (DELTAl/l almost-equal-to 3.8 x 10(-4)) as well as by a large change of the sound velocity of the shear wave in the bc plane (from 675 m s-1 down to 220 m s-1). Magnetic phase diagrams of Gd3Co are given for different directions of the applied field.

Author keywords:

INTERMETALLIC COMPOUNDS; R3CO

DOI:

10.1016/0925-8388(93)90542-U

Web of Science ID:

ISI:A1993MK67800043

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	DEC 10
Publisher	ELSEVIER SCIENCE SA LAUSANNE
Address	PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND
Language	English
Keywords-Plus	INTERMETALLIC COMPOUNDS; R3CO
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Katori, Hiroko/C-8794-2013 Andreev, Alexander/B-6057-2011 Baranov, Nikolai/J-5042-2013
ORCID-Numbers	Baranov, Nikolai/0000-0002-9720-5314 Kvashnin, Gennady/0000-0002-8203-5316
Number-of-Cited-References	31
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	MK678