Destruction of Ferromagnetism in Zr Zn 2 at High Pressure
Destruction of Ferromagnetism in Zr Zn 2 at High Pressure
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DOI：
10.1103/physrevlett.27.1732
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发表时间：
1971-12
影响因子：
8.6
通讯作者：
T. F. Smith;J. Mydosh;E. Wohlfarth
中科院分区：
文献类型：
--
作者：
T. F. Smith;J. Mydosh;E. Wohlfarth
The variation of the Curie temperature ${T}_{c}$ for the weak ferromagnet Zr${\mathrm{Zn}}_{2}$ has been determined as a function of hydrostatic pressure up to 25 kbar. ${T}_{c}$ is found initially to decrease linearly with pressure at a rate $\frac{\ensuremath{\partial}{T}_{c}}{\ensuremath{\partial}P}=(\ensuremath{-}1.8\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ \ifmmode^\circ\else\textdegree\fi{}K ${\mathrm{bar}}^{\ensuremath{-}1}$, followed by an abrupt change of slope at 7.5 kbar and a rapid fall, extrapolating to a critical pressure ${P}_{c}$ of 8.5 kbar for the destruction of ferromagnetism. The measured ${T}_{c}(P)$ curve agrees well with the relationship ${T}_{c}(P)={T}_{c}(0){(1\ensuremath{-}\frac{P}{{P}_{c}})}^{\frac{1}{2}}$ which is derived from the theory of itinerant ferromagnetism.
The variation of the Curie temperature ${T}_{c}$ for the weak ferromagnet Zr${\mathrm{Zn}}_{2}$ has been determined as a function of hydrostatic pressure up to 25 kbar. ${T}_{c}$ is found initially to decrease linearly with pressure at a rate $\frac{\ensuremath{\partial}{T}_{c}}{\ensuremath{\partial}P}=(\ensuremath{-}1.8\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ \ifmmode^\circ\else\textdegree\fi{}K ${\mathrm{bar}}^{\ensuremath{-}1}$, followed by an abrupt change of slope at 7.5 kbar and a rapid fall, extrapolating to a critical pressure ${P}_{c}$ of 8.5 kbar for the destruction of ferromagnetism. The measured ${T}_{c}(P)$ curve agrees well with the relationship ${T}_{c}(P)={T}_{c}(0){(1\ensuremath{-}\frac{P}{{P}_{c}})}^{\frac{1}{2}}$ which is derived from the theory of itinerant ferromagnetism.