The Ferromagnetic Resonance and Probe Microscopy Studies of Temperature-Induced Uniaxial Deformations in Planar Ferromagnetic Microparticles.

Autor: Nurgazizov, N. I., Bizyaev, D. A., Chuklanov, A. P., Bukharaev, A. A., Bazan, L. V., Shur, V. Ya., Akhmatkhanov, A. R.
Zdroj: Bulletin of the Russian Academy of Sciences: Physics; Jul2024, Vol. 88 Issue 7, p1067-1072, 6p
Abstrakt: Square planar nickel microparticles deposited on the surface of single crystals of lithium niobate in the hexagonal phase and potassium titanyl phosphate were studied. Because the thermal expansion coefficients of these single crystals strongly differ, the uniaxial anisotropy is induced in the microparticles by heating or cooling relative to the deposition temperature. The phenomenon of the induction of anisotropy was explored using magnetic force microscopy and ferromagnetic resonance spectroscopy. Data obtained from ferromagnetic resonance spectra show that, in the ensemble of microparticles, with increasing temperature of the samples from –10 to 60°C, the axis of anisotropy rotates by 90°. This agrees well with the data about the domain structure of an individual microparticle, obtained by magnetic force microscopy. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index