Journal
PHYSICS OF THE SOLID STATE
Volume 56, Issue 1, Pages 14-16Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063783414010387
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Funding
- Presidium of the Russian Academy of Sciences [12-P-2-1019 UrO RAN]
- Ministry of Education and Science of the Russian Federation [14.518.11.7020, 16.552.11.7055]
- Russian Foundation for Basic Research [12-02-12070-ofi_m, 12-02-12069-ofi_m]
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The temperature dependence of the lattice constant of the ferromagnet La(Fe0.86Si0.14)(13) has been measured at different pressures and temperatures. The numerical value of the bulk modulus at room temperature has been determined. The measurements of the temperature dependence of the lattice constant of the ferromagnet La(Fe0.86Si0.14)(13) at zero pressure and at 11.5 kbar have demonstrated that, at zero pressure, the lattice constant sharply decreases in the range from 160 to 210 K, whereas at a pressure of 11.5 kbar, the lattice constant decreases in the range from 110 to 180 K. This indicates that the Curie temperature T (C) changes from 210 to similar to 170 K under pressure. The experimental results have been analyzed using the equations of states for the magnetic and elastic subsystems of the ferromagnet.
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