Magnetic-field-induced transition from metastable spin glass to possible antiferromagnetic-ferromagnetic phase separation in Cd0.5Cu0.5Cr2O4 |
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| Authors: | Li-qin Yan Wen Yin Jun Shen Lun-hua He |
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| Institution: | a State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
b Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona, Avda. Diagonal 647, Planta 4, Edifici nou, 08028 Barcelona, Spain |
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| Abstract: | Using ac susceptibility, dc magnetization and heat-capacity measurements, we have investigated the magnetic properties of Cd0.5Cu0.5Cr2O4. Cd0.5Cu0.5Cr2O4 has an extraordinary magnetic phase including a metastable spin-glass (SG) phase at zero field, a possible phase separation scenario of AFM/FM above ∼0.5 T field, and at intermediate fields, an apparent pseudo reentrant spin-glass (RSG) plateau is observed. These phenomena are closely correlated with the pinning effect of the Cu2+ sublattice on the frustrated lattice. |
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| Keywords: | 75 50 Lk 75 30 Kz 75 50 Ee |
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