Two-step transition in a magnetoelectric ferrimagnet Cu2OSeO3 (CROSBI ID 190366)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Živković, Ivica ; Pajić, Damir ; Ivek, Tomislav ; Berger, Helmut
engleski
Two-step transition in a magnetoelectric ferrimagnet Cu2OSeO3
We report a detailed single-crystal investigation of a magnetoelectric ferrimagnet Cu2OSeO3 using dc magnetization and ac susceptibility along the three principal directions [100], [110], and [111]. We have observed that in small magnetic fields two magnetic transitions occur, one at Tc=57 K and the second one at TN=58 K. At Tc the nonlinear susceptibility reveals the emergence of the ferromagnetic component and below Tc the magnetization measurements show the splitting between field-cooled and zero-field-cooled regimes. Above 1000 Oe the magnetization saturates and the system is in a single domain state. The temperature dependence of the saturation below Tc can be well described by μ(T)=μ(0)[1−(T/Tc)2]β, with μ(0)=0.56μB/Cu, corresponding to the 3-up-1-down configuration. The dielectric constant measured on a thin single crystal shows a systematic deviation below the transition, indicating an intrinsic magnetoelectric effect.
ferrimagnet; magnetoelectric; crystal Cu2OSeO3; magnetic transitions; dielectric
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
85 (22)
2012.
224402-1-224402-7
objavljeno
1098-0121
10.1103/PhysRevB.85.224402
Povezanost rada
Fizika