Pressure dependence of ferromagnetic phase boundary in BaVSe3 studied with high-pressure μ+SR
Artikel i vetenskaplig tidskrift, 2021

The magnetic nature of a quasi-one-dimensional compound, BaVSe3, has been investigated with positive muon spin rotation and relaxation (μ+SR) measurements at ambient and high pressures. At ambient pressure, the μ+SR spectrum recorded under zero external magnetic field exhibited a clear oscillation below the Curie temperature (TC∼41K) due to the formation of quasistatic ferromagnetic order. The oscillation consisted of two different muon spin precession signals, indicating the presence of two magnetically different muon sites in the lattice. However, the two precession frequencies, which correspond to the internal magnetic fields at the two muon sites, could not be adequately explained with relatively simple ferromagnetic structures using the muon sites predicted by density functional theory calculations. The detailed analysis of the internal magnetic field suggested that the V moments align ferromagnetically along the c axis but slightly canted toward the a axis by 28 that is coupled antiferromagnetically. The ordered V moment (MV) is estimated as (0.59, 0, 1.11) μB. As pressure increased from ambient pressure, TC was found to decrease slightly up to about 1.5 GPa, at which point TC started to increase rapidly with the further increase of the pressure. Based on a strong ferromagnetic interaction along the c axis, the high-pressure μ+SR result revealed that there are two magnetic interactions in the ab plane; one is an antiferromagnetic interaction that is enhanced with pressure, mainly at pressures below 1.5 GPa, while the other is a ferromagnetic interaction that becomes predominant at pressures above 1.5 GPa.


Jun Sugiyama

Japan Atomic Energy Agency

High Energy Accelerator Research Organization

Comprehensive Research Organization for Science and Society (CROSS)

Wataru Higemoto

Japan Atomic Energy Agency

Daniel Andreica

Universitatea Babes-Bolyai

Ola Kenji Forslund

Kungliga Tekniska Högskolan (KTH)

E. Nocerino

Kungliga Tekniska Högskolan (KTH)

Martin Månsson

Kungliga Tekniska Högskolan (KTH)

Yasmine Sassa

Chalmers, Fysik, Materialfysik

Ritu Gupta

Paul Scherrer Institut

Rustem Khasanov

Paul Scherrer Institut

Hiroto Ohta

Kyoto University

Hiroyuki Nakamura

Kyoto University

Physical Review B

24699950 (ISSN) 24699969 (eISSN)

Vol. 103 10 104418

Framtidens Lågdimensionella Skyrmion Material

Vetenskapsrådet (VR), 2019-06-01 -- 2021-12-31.


Oorganisk kemi

Fusion, plasma och rymdfysik

Den kondenserade materiens fysik





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