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Coercivity and Interactions in Sr–M Thin Films with Nonperpendicular Orientation
Author(s) -
Faloh Gandarilla Jael Cristina,
Díaz-Castañón Sergio
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201900394
Subject(s) - coercivity , materials science , thin film , magnetometer , scanning electron microscope , substrate (aquarium) , analytical chemistry (journal) , demagnetizing field , laser ablation , nuclear magnetic resonance , condensed matter physics , magnetic field , magnetization , composite material , optics , nanotechnology , chemistry , laser , physics , oceanography , quantum mechanics , chromatography , geology
Magnetic viscosity and interactions have been studied recently in bulk M‐type hexaferrites. Herein, this kind of study is extended to Sr–M (SrFe 12 O 19 ) thin films deposited on SiO 2 /Si substrates using the pulsed laser ablation technique at relatively low substrate temperatures at 2.7 mbar oxygen atmosphere. Samples are characterized by X‐ray diffraction, scanning electron microscopy, and vibrating‐sample magnetometry. The high values of the coercive field (4.8 kOe) obtained for the films are in correspondence with large values reported in thin films, powders, and sintered samples for the Sr–M compound. Demagnetization‐like interactions are found and magnetic viscosity results point to the coercivity mechanism different from coherent rotation despite the small particle size.