Magnetic and magnetocaloric properties of Gd(Ni1-xFex)(2) quasi-binary Laves phases with x=0.04 divided by 0.16 / Anikin Maksim,Tarasov Evgeniy,Kudrevatykh Nikolay,Inishev Aleksander,Semkin Mikhail,Volegov Aleksey,Zinin Aleksander // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2018. - V. 449, l. . - P. 353-359.

ISSN/EISSN:

0304-8853 / 1873-4766

Type:

Article

Abstract:

In this paper the results of specific magnetization (M), heat capacity (C-p) and magnetocaloric effect (MCE) measurements for Gd(Ni1-xFex)(2) system over the Ni substitution by Fe range of x = 0 divided by 0.16 are presented. Phase composition was controlled by X-ray diffraction analysis. Heat capacity was measured in the temperature range 77 : 320 K. MCE has been studied within the temperature range 5 : 400 K in magnetic fields up to 70 kOe by the entropy magnetic contribution change calculation (Delta S-m) and by direct Delta T-ad measurements at the adiabatic conditions for external magnetic field change Delta H = +/- 17.5 kOe. It was found that the Fe concentration increase causes both the C-p maxima disappearing at Curie temperature point and emergence of magnetic contribution to C-p in a wide temperature range below this point. Moreover, in compounds with iron, a plateau-like temperature dependence of the MCE was observed for both magnetic entropy change (Delta S-m) and direct Delta T-ad data which are independent on Fe concentration. The possible reasons of such behavior are discussed. (C) 2017 Elsevier B.V. All rights reserved.

Author keywords:

Magnetic properties; Magnetocaloric effect; Magnetic entropy change; Laves phase; Heat capacity RARE-EARTH; MAGNETORESISTANCE; MOMENT; FE

DOI:

10.1016/j.jmmm.2017.10.022

Web of Science ID:

ISI:000415976800049

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAR 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4766
Keywords-Plus	RARE-EARTH; MAGNETORESISTANCE; MOMENT; FE
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	maksim.anikin@urfu.ru
Funding-Acknowledgement	UrFU {[}3.6121.2017/8.9]; Ministry of Education and Science of Russian Federation {[}3.6121.2017/8.9]; Fund of assistance to development of small forms enterprises in scientific-technical sphere {[}6576GU/2015]
Funding-Text	The authors are grateful to Dr. N.V. Selezneva for the help with X-ray measurements. This work has been supported by the State contracts No. 3.6121.2017/8.9 between UrFU and the Ministry of Education and Science of Russian Federation and by the Fund of assistance to development of small forms enterprises in scientific-technical sphere No. 6576GU/2015.
Number-of-Cited-References	31
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	FN4LL