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Pressure driven magnetic order in Sr1-xCaxCo2P2
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics.ORCID iD: 0000-0001-8879-7875
Babes Bolyai Univ, Fac Phys, Cluj Napoca 400084, Romania..
Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden..
Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068502, Japan..
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2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 17526Article in journal (Refereed) Published
Abstract [en]

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 (mu+SR). The weak pressure dependence for the x not equal 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 p(c2) approximate to 9.8 kbar, which seem to be a first order transition. In addition, an intermediate phase consisting of magnetic domains is formed above p(c1) approximate to 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 T-i approximate to 20 K. This kind of co-existence is unusual and is originating from a coupling between lattice and magnetic degrees of freedoms.

Place, publisher, year, edition, pages
Springer Nature , 2022. Vol. 12, no 1, article id 17526
National Category
Condensed Matter Physics
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URN: urn:nbn:se:kth:diva-321303DOI: 10.1038/s41598-022-21699-yISI: 000870820900102PubMedID: 36266305Scopus ID: 2-s2.0-85140212445OAI: oai:DiVA.org:kth-321303DiVA, id: diva2:1710727
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QC 20221114

Available from: 2022-11-14 Created: 2022-11-14 Last updated: 2022-11-14Bibliographically approved

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Forslund, Ola KenjiMånsson, Martin

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