Micromagnetic structures near a second order phase transition in monocrystalline ferrite garnet plates / Pamyatnykh L.A., Belskii I.E., Shmatov G.A. // Acta Physica Polonica A. - 2015. - V. 127, l. 2. - P. 421-423.

ISSN:

05874246

Type:

Conference Paper

Abstract:

The main parameters of micromagnetic structure formation in a vicinity of a second order phase transition were determined experimentally and theoretically. The theoretical study was performed using micromagnetic approach. External magnetic field Hc of appearance of micromagnetic structure and micromagnetic structure period Lc were determined for (001)-oriented plate with uniaxialKu and cubic K1 magnetic anisotropy. The plate was saturated by the field applied in its plane. In the model we assumed that magnetization vector undergoes small deviations from equilibrium if magnetic field is slightly reduced. These deviations are periodic in nature: micromagnetic structure has a form of a plane wave. Dependences of Hc and Lc on an azimuthal angle of external magnetic field and on anisotropy constants Ku and K1 were derived analytically in this work. Experimental studies of micromagnetic structure near the second order phase transition were conducted on (EuEr)3(FeGa)5O12 (001)-oriented 50 μm thick ferrite-garnet plate with Ku = 5700 erg/cm3 and K1 = -3700 erg/cm3. Micromagnetic structure was revealed by means of magnetooptic Faraday effect. The in-plane field was increased up to 2000 Oe. Experimentally determined values of Hc and Lc were compared with theoretical estimates.

Author keywords:

Index keywords:

Anisotropy; Ferrite; Garnets; Magnetic anisotropy; Magnetic fields; Magnetic recording; Anisotropy constants; External magnetic field; Ferrite garnets; In-plane fields; Magnetization vector; Micromagn

DOI:

10.12693/APhysPolA.127.421

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927586239&doi=10.12693%2fAPhysPolA.127.421&partnerID=40&md5=cbc24cab59e110de534908a74741093e

Соавторы в МНС:

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Другие поля

Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927586239&doi=10.12693%2fAPhysPolA.127.421&partnerID=40&md5=cbc24cab59e110de534908a74741093e
Affiliations	Ural Federal University, Lenin Av. 51, Yekaterinburg, Russian Federation
References	Hubert, A., Schäfer, R., (2009) Magnetic Domains: The Analysis of Magnetic Microstructures, , Springer, Berlin; Hubert, A., Malozemoff, A.P., Deluca, J.C., (1974) J. Appl. Phys., 45, p. 3562; Kandaurova, G.S., Pamyatnykh, L.A., (1989) Sov. Phys. Solid State, 31, p. 132; Tarasenko, V.V., Chenskii, E.V., Dikshtein, I.E., (1976) JETP, 43, p. 1136
Correspondence Address	Pamyatnykh, L.A.; Ural Federal University, Lenin Av. 51, Russian Federation
Publisher	Polish Academy of Sciences
CODEN	ATPLB
Language of Original Document	English
Abbreviated Source Title	Acta Phys Pol A
Source	Scopus