Pressure driven magnetic order in Sr 1 - x Ca x Co 2 P 2
Journal article, 2022
The magnetic phase diagram of Sr1-xCaxCo2P2 as a function of hydrostatic pressure and temperature is investigated by means of high pressure muon spin rotation, relaxation and resonance (μ+SR). The weak pressure dependence for the x≠ 1 compounds suggests that the rich phase diagram of Sr1-xCaxCo2P2 as a function of x at ambient pressure may not solely be attributed to chemical pressure effects. The x= 1 compound on the other hand reveals a high pressure dependence, where the long range magnetic order is fully suppressed at pc 2≈ 9.8 kbar, which seem to be a first order transition. In addition, an intermediate phase consisting of magnetic domains is formed above pc 1≈ 8 kbar where they co-exist with a magnetically disordered state. These domains are likely to be ferromagnetic islands (FMI) and consist of an high- (FMI-1) and low-temperature (FMI-2) region, respectively, separated by a phase boundary at Ti≈ 20 K. This kind of co-existence is unusual and is originating from a coupling between lattice and magnetic degrees of freedoms.
Author
Ola Kenji Forslund
Chalmers, Physics, Materials Physics
Royal Institute of Technology (KTH)
Daniel Andreica
Babeș-Bolyai University
Yasmine Sassa
Chalmers, Physics, Materials Physics
Masaki Imai
Graduate School of Science
Chishiro Michioka
Graduate School of Science
Kazuyoshi Yoshimura
Graduate School of Science
Zurab Guguchia
Paul Scherrer Institut
Zurab Shermadini
Paul Scherrer Institut
Rustem Khasanov
Paul Scherrer Institut
Jun Sugiyama
Comprehensive Research Organization for Science and Society
Martin Månsson
Royal Institute of Technology (KTH)
Scientific Reports
2045-2322 (ISSN) 20452322 (eISSN)
Vol. 12 1 17526Subject Categories
Inorganic Chemistry
Physical Chemistry
Condensed Matter Physics
DOI
10.1038/s41598-022-21699-y
PubMed
36266305