Instability of the Co-magnetic moment in TM(Co,M)(2) (M=Al,Si) / Baranov NV,Bartashevich MI,Goto T,Yermakov AA,Karkin AE,Pirogov AN,Teplykh AE // JOURNAL OF ALLOYS AND COMPOUNDS. - 1997. - V. 252, l. 1-2. - P. 32-40.

ISSN/EISSN:

0925-8388 / нет данных

Type:

Article

Abstract:

Tm(Co1-xAlx)(2) compounds with x=O; 0.05; 0.10 and Tm(Co0.95Si0.05)(2) have been studied by means of ac-susceptibility, magnetization, magnetostriction, electrical resistivity and neutron diffraction measurements. It is shown that the magnetic state of TmCo2 is characterized by the absence of the Co-magnetic moment and by the presence of the localized spin density fluctuations in the d-subsystem at low temperatures and is strongly affected by an applied magnetic field. The partial substitution of Al or Si for Co in TmCo2 leads to the appearance of the long range magnetic order and gives rise to the Co-magnetic moment up to M-Co=1.25 mu B. In Tm(Co0.9Al0.1)(2), the field-induced phase transition in d-subsystem was observed at the critical field B-c approximate to 17 T using high-field magnetization and magnetostriction measurements. This phase transition is associated with a collapse of the Co-magnetic moment. Instability of the Co-magnetic moment in TmCo2 at the substitution and in an applied magnetic field is explained by the closeness of the molecular field acting on the Co-subsystem to the critical value of the Co metamagnetic transition field.

Author keywords:

ITINERANT-ELECTRON METAMAGNETISM; LAVES PHASE-COMPOUNDS; NEUTRON-DIFFRACTION; TMCO2; TRANSITION; BEHAVIOR; HOCO2; STATE

DOI:

10.1016/S0925-8388(96)02718-1

Web of Science ID:

ISI:A1997XE34000018

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY 5
Publisher	ELSEVIER SCIENCE SA LAUSANNE
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
Keywords-Plus	ITINERANT-ELECTRON METAMAGNETISM; LAVES PHASE-COMPOUNDS; NEUTRON-DIFFRACTION; TMCO2; TRANSITION; BEHAVIOR; HOCO2; STATE
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Karkin, Alexander/J-6712-2013 Baranov, Nikolai/J-5042-2013 Pirogov, Alexander/K-8115-2013 Aleksander, Teplykh/J-5571-2013
ORCID-Numbers	Karkin, Alexander/0000-0003-0464-4762 Baranov, Nikolai/0000-0002-9720-5314 Pirogov, Alexander/0000-0001-7321-1245 Aleksander, Teplykh/0000-0002-3698-9100 Bartashevich, Mikhail/0000-0001-6853-2992
Number-of-Cited-References	28
Usage-Count-Since-2013	11
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	XE340