Magnetic order, phase transitions and electrical resistivity of Ho7Rh3 single crystals / Tsutaoka Takanori,Obata Keisuke,Sherstobitov Andrey A.,Gerasimov Evgeny G.,Terentev Pavel B.,Baranov Nikolai V. // JOURNAL OF ALLOYS AND COMPOUNDS. - 2016. - V. 654, l. . - P. 126-132.

ISSN/EISSN:

0925-8388 / 1873-4669

Type:

Article

Abstract:

Field-induced magnetic phase transitions have been studied on Ho7Rh3 single crystals with the hexagonal Th7Fe3 structure by measuring the magnetization and electrical resistivity as a function of temperature and applied magnetic field. The Ho7Rh3 compound having an antiferromagnetic (AF) order below T-N = 32.0 K enters other magnetic states with decreasing temperature below T-t2 = 23.5 K and T-t1 = 9.0 K. Below T-t2, Ho7Rh3 possesses a small ferromagnetic component in the c-plane. Meanwhile, two successive metamagnetic transitions were observed in magnetic fields up to 100 kOe applied along the b-axis at T < T-t2. The metamagnetic phase transitions from AF to the forced ferromagnetic state in magnetic fields applied in the basal plane are observed to be accompanied by a large magnetoresistance (vertical bar Delta rho/rho vertical bar similar to 42\%). When the magnetic field is applied along the c-axis, the superzone gap effect on the electrical resistivity below T-N does not disappear even under 100 kOe. In the paramagnetic state, the additional magnetic contribution to the electrical resistivity is found to persist apparently because of the conduction electron scattering by the short ranged antiferromagnetic clusters and spin fluctuations in the Rh 4d electron subsystem, which leads to the negative temperature coefficient of the electrical resistivity. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Ho7Rh3; Magnetization; Magnetoresistance; Field-induced magnetic transition; Magnetic phase diagram GIANT MAGNETORESISTANCE; INTERMETALLIC COMPOUND; TRANSPORT-PROPERTIES; PARAMAGNETIC STATE; R7RH3 R; METALS; TB7RH3; GD7RH3; TB; HO

DOI:

10.1016/j.jallcom.2015.09.075

Web of Science ID:

ISI:000363270500017

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN 5
Publisher	ELSEVIER SCIENCE SA
Address	PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Language	English
EISSN	1873-4669
Keywords-Plus	GIANT MAGNETORESISTANCE; INTERMETALLIC COMPOUND; TRANSPORT-PROPERTIES; PARAMAGNETIC STATE; R7RH3 R; METALS; TB7RH3; GD7RH3; TB; HO
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	Baranov, Nikolai/J-5042-2013 Terentev, Pavel/J-3539-2013 Sherstobitov, Andrey/K-3838-2013 Gerasimov, Evgeny/J-3599-2013
ORCID-Numbers	Baranov, Nikolai/0000-0002-9720-5314 Terentev, Pavel/0000-0002-2348-6459 Sherstobitov, Andrey/0000-0001-9267-4181 Gerasimov, Evgeny/0000-0002-1975-705X
Funding-Acknowledgement	Japan Society for the Promotion of Science {[}25242015]; Ural Branch of RAS {[}15-17-2-22]; Center for Chiral Science in Hiroshima University (the MEXT program for promoting the enhancement of research universities, Japan); JSPS Core-to-Core Program, A. Advanced Research Networks
Funding-Text	A part of this work was supported by the grant-in-aid for scientific research (A) (No. 25242015) from Japan Society for the Promotion of Science and from the Ural Branch of RAS (Project No 15-17-2-22). This work was also supported by the Center for Chiral Science in Hiroshima University (the MEXT program for promoting the enhancement of research universities, Japan) and JSPS Core-to-Core Program, A. Advanced Research Networks.
Number-of-Cited-References	16
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	26
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	CU1HE