Pressure driven magnetic order in Sr 1 - x Ca x Co 2 P 2
Artikel i vetenskaplig tidskrift, 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.
Författare
Ola Kenji Forslund
Chalmers, Fysik, Materialfysik
Kungliga Tekniska Högskolan (KTH)
Daniel Andreica
Universitatea Babes-Bolyai
Yasmine Sassa
Chalmers, Fysik, Materialfysik
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
Kungliga Tekniska Högskolan (KTH)
Scientific Reports
2045-2322 (ISSN) 20452322 (eISSN)
Vol. 12 1 17526Ämneskategorier
Oorganisk kemi
Fysikalisk kemi
Den kondenserade materiens fysik
DOI
10.1038/s41598-022-21699-y
PubMed
36266305