Magnetocrystalline anisotropy and dynamic spin reorientation of half-doped Nd_(0.5)Pr_(0.5)FeO_3 single crystal |
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| Affiliation: | 1.Department of Physics, Shanghai University of Electric Power, Shanghai 200090, China;2.Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China;3.Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China;4.M. N. Mikheev Institute of Metal Physics, Ekaterinburg 620108, Russia;5.Ural Federal University, Ekaterinburg 620002, Russia |
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| Abstract: | The single crystals of Nd$_{0.5}$Pr$_{0.5}$FeO$_{3}$ were successfully grown by optical floating zone method. Room temperature x-ray diffraction and Laue photograph declared the homogeneity and high quality of the crystal. The significant magnetic anisotropy and multiple magnetic transitions illustrate the complex magnetic structure. At high temperatures ($T > 66 $ K), it shows the typical characteristics of $varGamma _{4}$(G$_{x}$, A$_{y}$, F$_{z}$) state. With the decrease of the temperature, it undergoes a first-order spin reorientation transition from $varGamma _{4}$(G$_{x}$, A$_{y}$, F$_{z}$) to $varGamma _{2}$(F$_{x}$, C$_{y}$, G$_{z}$) state in the temperature window of 45-66 K under an applied magnetic field of 0.01 T. As the temperature drops to $sim 17 $ K, a new magnetic interaction mechanism works, which results in a further enhancement of magnetization. The ${T}$-$H$ phase diagram of Nd$_{0.5}$Pr$_{0.5}$FeO$_{3}$ single crystal was finally constructed. |
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| Keywords: | rare earth orthoferrite magnetocrystalline anisotropy magnetic ordering magnetic hysteresis |
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