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Magnetic Anisotropy of [(Co41Fe39B20)x(SiO2)100 – x/Bi2Te3]47 Multilayer Heterostructures
- Source :
- Physics of the Solid State. 61:127-133
- Publication Year :
- 2019
- Publisher :
- Pleiades Publishing Ltd, 2019.
-
Abstract
- Magnetic anisotropy values are obtained for [(Co41Fe39B20)x(SiO2)100 – x/Bi2Te3]47 heterostructures consisting of SiO2 alternating layers, CoFeB nanoparticles distributed in them, and Bi2Te3 layers with ferromagnetic resonance and magnetometry. The heterostructures have anisotropy of ~106 erg/cm3, which orients the magnetic moment in films plane. The films are not solid, but they disintegrate into CoFeB nanoparticles with an average diameter of 5 nm during deposition, which corresponds to the blocking magnetization temperature of ~30 K during their saturation magnetization of MS = 720 emu/cm3. The relationship between anisotropy constant and thickness of the layers of the heterostructures is nonmonotonic due to competition between surface and bulk anisotropies of the ferromagnetic granules, which the films are made of.
- Subjects :
- 010302 applied physics
Materials science
Condensed matter physics
Magnetic moment
Magnetometer
Heterojunction
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Condensed Matter Physics
01 natural sciences
Ferromagnetic resonance
Electronic, Optical and Magnetic Materials
law.invention
Condensed Matter::Materials Science
Magnetization
Magnetic anisotropy
Ferromagnetism
law
0103 physical sciences
010306 general physics
Anisotropy
Subjects
Details
- ISSN :
- 10906460 and 10637834
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Physics of the Solid State
- Accession number :
- edsair.doi...........40eba544405094544ca11528a2150823