Giant magnetoresistance upon magnetic-field-induced phase transitions in intermetallic compounds based on f and d metals / Baranov NV // PHYSICS OF METALS AND METALLOGRAPHY. - 2004. - V. 98, l. 1. - P. S10-S22.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

The results of investigations of giant magnetoresistance (GMR) in the range of magnetic-field-induced phase transitions are discussed on the example of intermetallic compounds with various types of dominating exchange interaction (FeRh, (Mn,CO)(2)Sb, R3Co, RCo2). It is shown that the giant magnetoresistive effect in metallic antiferromagnets comparable with the GMR in artificial multilayer structures is accompanied by significant changes in the coefficient of electronic heat capacity. The resistivity changes in the compounds studied are related to the deformations of the Fermi surface due to the disappearance of Brillouin superzones upon transitions from the antiferromagnetic into ferromagnetic or ferrimagnetic state. The GMR observed at temperatures above the Curie point in ferri- or ferromagnetic compounds near magnetic-field-induced first-order phase transitions from the paramagnetic into a magnetically ordered state is explained by a discontinuous (jumplike) change in the magnetic contribution to the total resistance of intermetallic compounds.

Author keywords:

MODIFIED FERH COMPOUNDS; ELECTRICAL-RESISTIVITY; MODIFIED MN2SB; FERROMAGNETIC TRANSITION; SINGLE-CRYSTALS; ORDERED FERH; RH ALLOYS; HEAT; ANTIFERROMAGNETISM; RESISTANCE

DOI:

нет данных

Web of Science ID:

ISI:000225295400003

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	INTERPERIODICA
Address	PO BOX 1831, BIRMINGHAM, AL 35201-1831 USA
Language	English
Keywords-Plus	MODIFIED FERH COMPOUNDS; ELECTRICAL-RESISTIVITY; MODIFIED MN2SB; FERROMAGNETIC TRANSITION; SINGLE-CRYSTALS; ORDERED FERH; RH ALLOYS; HEAT; ANTIFERROMAGNETISM; RESISTANCE
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	nikolai.baranov@usu.ru
ResearcherID-Numbers	Baranov, Nikolai/J-5042-2013
ORCID-Numbers	Baranov, Nikolai/0000-0002-9720-5314
Number-of-Cited-References	66
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	12
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	873QI