Magnetic inhomogeneity and valence state in Sr2CrWO6 double perovskite
作者： Jinhui Wang , Gongqiang Liu , Wei Zhong , Youwei Du
DOI: 10.1063/1.1524710
关键词: Magnetoresistance 、 Coercivity 、 Ferromagnetic resonance 、 Magnetic field 、 Magnetization 、 Ground state 、 Curie temperature 、 Saturation (magnetic) 、 Condensed matter physics 、 Materials science
摘要: The magnetic inhomogeneities in the double perovskite Sr2CrWO6 ceramics have been investigated by means of ferromagnetic resonance spectra and magnetization measurements. experimental results show that peak-to-peak linewidth increases with decreasing temperature from 450 to 294 K. Meanwhile, samples exhibit a remarkable coercivity up 1050 Oe at room field 18.3 kOe, hard attain saturation magnetization. All these behaviors are symptomatic samples. magnetoresistance (MR), arising spin-polarized carriers tunneling grain boundaries, is about 24% 6 K 50 kOe. MR decreases elevating nearly zero temperature. These studies clearly reveal magnetically soft character this system prerequisite enhance low-field investigation x-ray photoemission indicates ground state Sr2CrW...
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