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Tricritical behavior in MnSi at nearly hydrostatic pressure

Alla E. Petrova·Vladimir Krasnorussky·John Sarrao·Sergei M. Stishov
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Abstract

AC magnetic susceptibility of a single crystal of MnSi was measured along the ferromagnetic phase-transition line up to a pressure of 0.8 GPa created by compressed helium. The results show that the tricritical point is situated at much lower pressure and at significantly higher temperature (Ptr~0.355 GPa, Ttr~25.2 K) than was reported previously (~1.2 GPa,~12 K). These new observations put certain constraints on the origin of the tricritical point in MnSi.

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Alla E. Petrova, Vladimir Krasnorussky, John Sarrao, Sergei M. Stishov. 2005-09-27. Tricritical behavior in MnSi at nearly hydrostatic pressure. https://doi.org/10.1103/physrevb.73.052409

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