Magnetization states of canted antiferromagnetic YFeO3investigated by terahertz time-domain spectroscopy
We investigate magnetization states of a canted antiferromagneticYFeO3 by using terahertz (THz) time-domain spectroscopy under a variationof an external magneticfield. As a quasi-ferromagnetic mode near 0.3 THz is excited by themagnetic fieldof the THz pulse, a precession of the magnetic moment and...
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Published in | Journal of applied physics Vol. 118; no. 23 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Melville
American Institute of Physics
21.12.2015
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Subjects | |
Online Access | Get full text |
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Summary: | We investigate magnetization states of a canted antiferromagneticYFeO3 by using terahertz (THz) time-domain spectroscopy under a variationof an external magneticfield. As a quasi-ferromagnetic mode near 0.3 THz is excited by themagnetic fieldof the THz pulse, a precession of the magnetic moment and its induction decay radiate the THzwave. Sinceoppositely aligned magneticdomains emit the circularly/elliptically polarized THz waves with opposite helicities,a detection of specific polarization of the THz wave shows a clear hysteresis behavior in goodagreement with a magnetization curve obtained as a function of the applied magnetic field. Furthermore,time-domain measurement of excited magnetic moment can provide direct information about the magnetizationdecay dynamics. |
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ISSN: | 0021-8979 1089-7550 |