The antiferromagnetic resonance (AFMR) spectra along the principal magnetic axes , , of the compound have been investigated in detail in a wide range of frequencies and magnetic fields (up to ) at . It is shown that this compound is a biaxial magnetic substance. At , there are two gaps in the spin-wave spectrum: and . The AFMR data were used to determine the effective magnetic-anisotropy fields: and . An anomalous interaction of the AFMR branches in has been detected, along with the appearance of coupled spin–spin oscillations of the same symmetry. An additional absorption in the AFMR spectrum is a local mode associated with breakdown of translational order in a low-dimension magnet. It is shown for the first time that the appearance of additional absorption peaks depends on the sample-cooling rate. It is proven that the observed peaks are associated with the internal modes of the domain boundaries.
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December 2009
Research Article|
December 01 2009
Antiferromagnetic resonance in Available to Purchase
M. I. Kobets;
M. I. Kobets
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
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K. G. Dergachev;
K. G. Dergachev
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
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S. L. Gnatchenko;
S. L. Gnatchenko
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
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E. N. Khats’ko;
E. N. Khats’ko
a)
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
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Yu. M. Vysochanskii;
Yu. M. Vysochanskii
Uzhgorod National University
, ul. Pidgirna, 46, Uzhgorod 88000, Ukraine
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M. I. Gurzan
M. I. Gurzan
Uzhgorod National University
, ul. Pidgirna, 46, Uzhgorod 88000, Ukraine
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M. I. Kobets
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
K. G. Dergachev
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
S. L. Gnatchenko
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
E. N. Khats’ko
a)
B. I. Verkin Physicotechnical Institute of Low Temperatures,
National Academy of Sciences of Ukraine
, pr. Lenina, 47, Kharkov 61103, Ukraine
Yu. M. Vysochanskii
Uzhgorod National University
, ul. Pidgirna, 46, Uzhgorod 88000, Ukraine
M. I. Gurzan
Uzhgorod National University
, ul. Pidgirna, 46, Uzhgorod 88000, Ukrainea)
Email: [email protected]
Low Temp. Phys. 35, 930–934 (2009)
Citation
M. I. Kobets, K. G. Dergachev, S. L. Gnatchenko, E. N. Khats’ko, Yu. M. Vysochanskii, M. I. Gurzan; Antiferromagnetic resonance in . Low Temp. Phys. 1 December 2009; 35 (12): 930–934. https://doi.org/10.1063/1.3272560
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