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© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

GdFeTeO6 and GdGaTeO6 have been prepared and their structures refined by the Rietveld method. Both are superstructures of the rosiaite type (space group P3¯1c). Their thermodynamic properties have been investigated by means of magnetization M and specific heat Cp measurements, evidencing the formation of the long-range antiferromagnetic order at TN = 2.4 K in the former compound and paramagnetic behavior down to 2 K in the latter compound. Large magnetocaloric effect allows considering GdFeTeO6 for the magnetic refrigeration at liquid hydrogen stage. Density functional theory calculations produce estimations of leading Gd–Gd, Gd–Fe and Fe–Fe interactions suggesting unique chiral 120° magnetic structure of Fe3+ (S = 5/2) moments and Gd3+ (J = 7/2) moments rotating in opposite directions (clockwise/anticlockwise) within weakly coupled layers of the rosiaite type crystal structure.

Details

Title
Chirality and Magnetocaloricity in GdFeTeO6 as Compared to GdGaTeO6
Author
Zvereva, Elena 1 ; Vasilchikova, Tatyana 1   VIAFID ORCID Logo  ; Evstigneeva, Maria 2 ; Tyureva, Angelica 2 ; Nalbandyan, Vladimir 2   VIAFID ORCID Logo  ; Gonçalves, João 3   VIAFID ORCID Logo  ; Barone, Paolo 4 ; Stroppa, Alessandro 5 ; Vasiliev, Alexander 6   VIAFID ORCID Logo 

 Department of Low Temperature Physics and Superconductivity, Physics Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia; [email protected] (E.Z.); [email protected] (T.V.) 
 Department of Chemistry, Southern Federal University, 344090 Rostov-on-Don, Russia; [email protected] (M.E.); [email protected] (A.T.); [email protected] (V.N.) 
 Department of Physics and CICECO, University of Aveiro, 3810-193 Aveiro, Portugal; [email protected] 
 Consiglio Nazionale delle Ricerche, Institute for Superconducting and Innovative Materials and Devices (CNR-SPIN), Area della Ricerca di Tor Vergata, Via del Fosso del Cavaliere 100, I-00133 Rome, Italy; [email protected] 
 Consiglio Nazionale delle Ricerche, Institute for Superconducting and Innovative Materials and Devices (CNR-SPIN), c/o Department of Physical and Chemical Sciences, University of L’Aquila, Via Vetoio Coppito, I-67100 L’Aquila, Italy; [email protected] 
 Department of Low Temperature Physics and Superconductivity, Physics Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia; [email protected] (E.Z.); [email protected] (T.V.); Quantum Functional Materials Laboratory, National University of Science and Technology “MISiS”, 119049 Moscow, Russia 
First page
5954
Publication year
2021
Publication date
2021
Publisher
MDPI AG
e-ISSN
19961944
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2584440655
Copyright
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.