Аннотация: We present a resonant x-ray diffraction study of the magnetic order in NdFe3(BO3)4 and its coupling to applied electric fields. Our high-resolution measurements reveal two different coexisting magnetic phases, which can directly be controlled and manipulated by external electric fields. More specifically, the volume fraction of the collinear magnetic phase is found to strongly increase at the expense of helically ordered regions when an electric field is applied. These results confirm that the collinear magnetic phase is responsible for the ferroelectric polarization of NdFe3(BO3)4 and, more importantly, demonstrate that coexisting magnetic phases provide a route towards materials with a strong but yet hysteresis-free magnetoelectric response.
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Держатели документа:
IFW Dresden, Leibniz Inst Solid State & Mat Res, Helmholtzstr 20, D-01069 Dresden, Germany.
ESRF, BP 220, F-38043 Grenoble, France.
Politecn Milan, Dipartimento Fis, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy.
Politecn Milan, Unita CNISM, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy.
ALBA Synchrotron Light Source, E-08290 Barcelona, Spain.
Helmholtz Zentrum Berlin, Albert Einstein Str 15, D-12489 Berlin, Germany.
Moscow MV Lomonosov State Univ, Fac Phys, Low Temp Phys Dept, Moscow 119992, Russia.
Ural Fed Univ, Theoret Phys & Appl Math Dept, Ekaterinburg 620002, Russia.
Natl Univ Sci & Technol MISiS, Moscow 119049, Russia.
RAS, Siberian Branch, LV Kirensky Inst Phys, Krosnayarsk 660036, Russia.
Tech Univ Dresden, Inst Solid State Phys, D-01062 Dresden, Germany.
Paris Lodron Univ Salzburg, Chem & Phys Mat, Hellbrunner Str 34, A-5020 Salzburg, Austria.
OUT eV, Kopenicker Str 325,Haus 201, D-12555 Berlin, Germany.
Доп.точки доступа:
Partzsch, S.; Hamann-Borrero, J. E.; Mazzoli, C.; Herrero-Martin, J.; Valencia, S.; Feyerherm, R.; Dudzik, E.; Vasiliev, A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Buchner, B.; Geck, J.; DFG [SFB 1143, GE 1647/2-1, HA6470/1-1]; Ministry of Education and Science of the Russian Federation [kappa2-2015-075]; Government of the Russian Federation [02.A03.21.0006]