Author(s): Wu, YY (Wu, Yuanyuan); Mudryk, Y (Mudryk, Yaroslav); Biswas, A (Biswas, Anis); Pecharsky, V (Pecharsky, Vitalij); Long, Y (Long, Yi)
Source: JOURNAL OF ALLOYS AND COMPOUNDS Volume: 830 Article Number: 154613 DOI: 10.1016/j.jallcom.2020.154613 Published: JUL 25 2020
Abstract: The structure and magnetic properties of Nd(Ali_xFex)2 alloys with x = 0, 0.05, 0.1 and 0.2, which adopt cubic MgCu2-type structure with space group Fd3m, are studied using x-ray powder diffraction, static and dynamic magnetization, and calorimetric measurements. The lattice constant decreases linearly with increasing Fe content from 8.0106(4) A to 7.9044(4) A. Large thermal irreversibilities between zero -field cooled and field -cooled conditions are observed for all substituted samples. The magnetic transition temperatures exhibit a minimum for x = 0.1, and coercive fields at 2 K increase from 70 Oe for x = 0 to 6.3 kOe for x = 0.2. The absence of)-type peak in the heat capacity data, frequency dependence of ac magnetic susceptibility, and memory effects indicate formation of a cluster-glass magnetic state when x > 0.1. (C) 2020 Elsevier B.V. All rights reserved.
Accession Number: WOS:000525824700042
ISSN: 0925-8388
eISSN: 1873-4669
Full Text: https://www.sciencedirect.com/science/article/pii/S0925838820309762?via%3Dihub