Giant magnetoresistance and field-induced magnetic phase transitions in Gd7Rh3 studied on single crystals / Tsutaoka Takanori,Matsushita Takuya,Proshkin Alexey V.,Gerasimov Evgeny G.,Terentev Pavel B.,Baranov Nikolai V. // JOURNAL OF ALLOYS AND COMPOUNDS. - 2015. - V. 628, l. . - P. 230-235.

ISSN/EISSN:

0925-8388 / 1873-4669

Type:

Article

Abstract:

Magnetization measurements in steady and pulsed fields and magnetoresistance measurements in different field-current geometries on single crystalline samples have been employed to study the field-induced magnetic phase transitions in the antiferromagnetically (AF) ordered compound Gd7Rh3 with hexagonal crystal structure of the Th7Fe3 type. Below T-N = 141 K, the magnetic structure transformations from AF to the forced ferromagnetic (FF) state, which are accompanied by a giant reduction of the electrical resistivity (up to 7 times at low temperatures), were observed under the magnetic fields along the c-axis and in the basal plane. This giant magnetoresistance is associated with magnetic superzone effects. The negative temperature coefficient of the electrical resistivity and a large magnetoresistance were also observed in the paramagnetic region in Gd7Rh3; which are suggested to result from the retention of short-range AF correlations in a wide temperature range above TN. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Gd7Rh3; Magnetization; Magnetoresistance; Field-induced magnetic transition; Magnetic phase diagram TRANSPORT-PROPERTIES; ELECTRICAL-RESISTIVITY; INTERMETALLIC COMPOUND; PARAMAGNETIC STATE; GD7T3 T=PD; METALS; EXCHANGE; BEHAVIOR; TB7RH3

DOI:

10.1016/j.jallcom.2014.12.167

Web of Science ID:

ISI:000349084100034

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR 15
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
EISSN	1873-4669
Keywords-Plus	TRANSPORT-PROPERTIES; ELECTRICAL-RESISTIVITY; INTERMETALLIC COMPOUND; PARAMAGNETIC STATE; GD7T3 T=PD; METALS; EXCHANGE; BEHAVIOR; TB7RH3
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
Author-Email	tsutaok@hiroshima-u.ac.jp
ResearcherID-Numbers	Terentev, Pavel/J-3539-2013 Gerasimov, Evgeny/J-3599-2013 Baranov, Nikolai/J-5042-2013
ORCID-Numbers	Terentev, Pavel/0000-0002-2348-6459 Gerasimov, Evgeny/0000-0002-1975-705X Baranov, Nikolai/0000-0002-9720-5314
Funding-Acknowledgement	program of the Ural Branch of RAS {[}12-T-2-1012]
Funding-Text	A part of this work was supported by the program of the Ural Branch of RAS (Project No 12-T-2-1012).
Number-of-Cited-References	24
Usage-Count-Since-2013	33
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	CA7FV