Sharma, Shivani, Adroja, D. T., Ritter, C., Khalyavin, D., Manuel, P., Stenning, Gavin B. G., Sundaresan, A., Hillier, A. D., Deen, P. P., Khomskii, D., I and Langridge, S. (2020). Magnetic ground state of the ordered double-perovskite Sr2YbRuO6: Two magnetic transitions. Phys. Rev. B, 102 (13). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Full text not available from this repository.

Abstract

Comprehensive muon-spin-rotation/relaxation (mu SR) and neutron powder-diffraction (NPD) studies supported via bulk measurements have been performed on the ordered double-perovskite Sr2YbRuO6 to investigate the nature of the magnetic ground state. Two sharp transitions at T-N1 similar to 42 K and T-N2 similar to 36 K have been observed in the static and dynamic magnetization measurements, coinciding with the heat-capacity data. In order to confirm the origin of the observed phase transitions and the magnetic ground state, microscopic evidences are presented here. An initial indication of long-range magnetic ordering comes from a sharp drop in the muon initial asymmetry and a peak in the relaxation rate near T-N1. NPD confirms that the magnetic ground state of Sr2YbRuO6 consists of an antiferromagnetic (AFM) structure with interpenetrating lattices of parallel Yb3+ and Ru5+ moments lying in the ab plane and adopting an A-type AFM structure. Intriguingly, a small but remarkable change is observed in the long-range ordering parameters at T-N2 confirming the presence of a weak spin reorientation (i.e., change in spin configuration) transition of Ru and Yb moments, as well as a change in the magnetic moment evolution of the Yb3+ spins at T-N2. The temperature-dependent behavior of the Yb3+ and Ru5+ moments suggests that the 4d electrons of Ru5+ play a dominating role in stabilizing the long-range-ordered magnetic ground state in the double-perovskite Sr2YbRuO6 whereas only the Yb3+ moments show an arrest at T-N2. The observed magnetic structure and the presence of a ferromagnetic interaction between Ru and Yb ions are explained with use of the Goodenough-Kanamori-Anderson rules. Possible reasons for the presence of the second magnetic phase transition and of a compensation point in the magnetization data are linked to competing mechanisms of magnetic anisotropy.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Sharma, ShivaniUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Adroja, D. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ritter, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khalyavin, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Manuel, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stenning, Gavin B. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sundaresan, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hillier, A. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deen, P. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khomskii, D., IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Langridge, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-315381
DOI: 10.1103/PhysRevB.102.134412
Journal or Publication Title: Phys. Rev. B
Volume: 102
Number: 13
Date: 2020
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NEUTRON-DIFFRACTION; CRYSTAL-STRUCTURES; SR(2)LNRUO(6) LN; SR; BA; EUMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/31538

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item