Muon spin relaxation in some multiferroic fluorides

被引:7
|
作者
Potocnik, Anton [1 ]
Zorko, Andrej [1 ]
Arcon, Denis [1 ]
Goreshnik, Evgenij [1 ]
Zemva, Boris [1 ]
Blinc, Robert [1 ,2 ]
Cevc, Pavel [1 ,2 ]
Trontelj, Zvonko [3 ]
Jaglicic, Zvonko [3 ]
Scott, James F. [4 ]
机构
[1] Jozef Stefan Inst, Ljubljana 1000, Slovenia
[2] J Stefan Int Postgrad Sch, Ljubljana 1000, Slovenia
[3] Inst Math Phys & Mech, Ljubljana 1000, Slovenia
[4] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
关键词
FERROELECTRICITY;
D O I
10.1103/PhysRevB.81.214420
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Muon spin relaxation (mu SR) has been employed to investigate the local magnetic properties of multiferroics K3Fe5F15, K3Cr2Fe3F15, and K3Cu3Fe2F15. In all investigated systems mu SR revealed a linear F-mu(+)- F "hydrogenlike" bonded complex with the F-F distance of 2.43(2) angstrom in the paramagnetic phase. Two consecutive magnetic transitions were found in all systems, in agreement with the magnetic susceptibility measurements. Whereas in the paramagnetic phase the local magnetic fields at muon sites are about 20 G, they strongly increase below the Neel temperature T-N and reach values of several kilogauss. The mu SR results further suggest that the system is inhomogeneous below T(N)with magnetically ordered clusters being embedded into a disordered matrix. This scenario is endorsed by our electron paramagnetic resonance results.
引用
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页数:6
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