Magnetic properties of the hydrides based on R-Fe compounds / Matsuda K,Yamaguchi M,Yamamoto I,Katori HA,Goto T,Bartashevich MI // JOURNAL OF ALLOYS AND COMPOUNDS. - 1995. - V. 231, l. 1-2. - P. 201-204.

ISSN/EISSN:

0925-8388 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The influence of hydrogenation on the magnetic properties of the compounds GdFe3, Gd6Fe23, DyFe3 and Dy6Fe23 has been investigated by measurements of powder high field magnetization at 4.2 K in pulsed fields up to 38 T. The magnetization curves of the hydrides GdFe3Hx and Gd6Fe23Hx show the spin-flip transition from the ferrimagnetic state to a noncollinear spin structure at the critical field B-c. The exchange coupling n(RT) between the R and the Fe sublattices was estimated from the slope dM/dB above B-c. The values of n(RT), B-c and the compensation temperature T-comp decrease with increasing hydrogen composition, indicating a weakening in the R-T coupling. The magnetization of the hydrides DyFe3Hx and Dy6Fe23Hx does not reach saturation even at 38 T. In the Dy hydrides the magnetocrystalline anisotropy for the Dy ion competes with n(RT) which is weakened upon hydrogenation. The fanning effect is revealed by the Dy moments at the ground state of Dy6Fe23H12. The Fe moment increases in the initial stages of absorption of hydrogen and then decreases as more hydrogen is absorbed.

Author keywords:

magnetic properties; hydrogenation; R-Fe compounds; exchange interaction FIELDS

DOI:

10.1016/0925-8388(95)01815-8

Web of Science ID:

ISI:A1995TQ53600036

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	DEC 15
Note	International Symposium on Metal-Hydrogen Systems - Fundamentals and Applications, FUJIYOSHIDA SHI, JAPAN, NOV 06-11, 1994
Publisher	ELSEVIER SCIENCE SA LAUSANNE
Address	PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND
Language	English
Keywords-Plus	FIELDS
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
ORCID-Numbers	Bartashevich, Mikhail/0000-0001-6853-2992
Number-of-Cited-References	17
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	5
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	TQ536