[Kovove materialy - Metallic materials]
    Fri - April 12, 2024 - 22:47 No. of hits : 1740511 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 61 (2023), Issue 3

Crystal structure, magnetic and thermal properties of the non-stoichiometric alloys Tb0.95Pd2.20Mn0.85 and Dy1.00Pd2.15Mn0.85
TARAS KOVALIUK, ROSS HARVEY COLMAN, BARBORA VONDRÁČKOVÁ, OLEKSANDR KOLOMIETS, MILAN KLICPERA
vol. 61 (2023), no. 3, pp. 135 - 144
DOI: 10.31577/km.2023.3.135

Abstract
The alloys RNi2Mn and RCo2Mn with R representing the rare earth element are isostructural analogues of the binary Laves phases RNi2, RCo2. We have synthesized the isoelectronic Pd-based RPd2Mn analogues with R = Gd, Tb, and Dy, for the first time. They crystallize in a cubic structure, however, not in the cubic C15 ( Fd-3m ) structure of RNi2Mn, nor the Laves phase’ structure. Instead, the crystal lattice is described by the ( Im-3m space group with Tb/Dy, Pd, and Mn atoms randomly distributed over the 2a Wyckoff position of the W-type structure (A2, disordered bcc). The magnetization data reveal a standard paramagnetic behavior, with effective magnetic moments strikingly close to those expected for Tb3+ and Dy3+ free ions, down to 130 K.

Key words
RETM2Mn, RE1-zPd2+x+yMn1-x alloys, solid solutions, intermetallics, crystal structure, magnetization

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
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