Probing 3d-4f Exchange Interactions by High-Field Magnetization Measurements

• Authors: Y. Skourski , M. Kuz'min , K. Skokov , K. Müller , J. Wosnitza
• Languages of publication: EN

Abstracts

EN

In a 4f-3d ferrimagnet the molecular field (a net value expressing the relevant exchange interactions) can be determined from high-field magnetization measurements. If the applied field is high enough, it breaks the ferrimagnetic ground state and drives the system towards ferromagnetic order via non-collinear intermediate phases. Magnetization curves of Er_2Fe_{17} singe crystal were measured along the [100] crystallographic direction in magnetic fields up to 50 T. An unfixed sample, free to rotate, was measured as well. The magnetization measured along the easy magnetization direction shows jumps at 37.5 and 44 T. The first jump was used for the determination of the molecular field (66.4 T). This agrees with the data for the unfixed sample where a kink in the magnetization at 33.5 T yields a molecular field of 65.7 T. The obtained values are in a good agreement with literature data.

Keywords

EN

75.30.Et; 75.30.Kz

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 178-180

Dates

published

2009-01

Contributors

author

Y. Skourski

• Hochfeld-Magnetlabor Dresden (HLD), Forschungszentrum Dresden-Rossdeuorf (FZD), D-01314 Dresden, Germany

author

M. Kuz'min

• Leibniz Institute for Solid State and Materials Research Dresden, PF 51 01 19, D-01171 Dresden, Germany

author

K. Skokov

• Faculty of Physics, Tver State University, 33 Gelabova Street, 170002 Tver, Russia

author

K. Müller

• Leibniz Institute for Solid State and Materials Research Dresden, PF 51 01 19, D-01171 Dresden, Germany

author

J. Wosnitza

• Hochfeld-Magnetlabor Dresden (HLD), Forschungszentrum Dresden-Rossendorf (FZD), D-01314 Dresden, Germany

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Identifiers

DOI

10.12693/APhysPolA.115.178