Rare earth doped M-type hexaferrites; ferromagnetic resonance and magnetization dynamics

M-type hexagonal barium ferrites come in the category of magnetic material that plays a key role in electromagnetic wave propagation in various microwave devices. Due to their large magnetic anisotropy and large magnetization, their operating frequency exceeds above 50 GHz. Doping is a way to vary i...

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Bibliographic Details
Published inAIP advances Vol. 8; no. 5; pp. 056232 - 056232-5
Main Authors Sharma, Vipul, Kumari, Shweta, Kuanr, Bijoy K.
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.05.2018
AIP Publishing LLC
Subjects
Barium
Electromagnetic radiation
Ferromagnetic resonance
Ferromagnetism
Magnetic anisotropy
Magnetic materials
Magnetic properties
Magnetism
Magnetization
Nanoparticles
Neodymium
Rare earth elements
Samarium
Wave propagation
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Summary:M-type hexagonal barium ferrites come in the category of magnetic material that plays a key role in electromagnetic wave propagation in various microwave devices. Due to their large magnetic anisotropy and large magnetization, their operating frequency exceeds above 50 GHz. Doping is a way to vary its magnetic properties to such an extent that its ferromagnetic resonance (FMR) response can be tuned over a broad frequency band. We have done a complete FMR study of rare earth elements neodymium (Nd) and samarium (Sm), with cobalt (Co) as base, doped hexaferrite nanoparticles (NPs). X-ray diffractometry, vibrating sample magnetometer (VSM), and ferromagnetic resonance (FMR) techniques were used to characterize the microstructure and magnetic properties of doped hexaferrite nanoparticles. Using proper theoretical electromagnetic models, various parameters are extracted from FMR data which play important role in designing and fabricating high-frequency microwave devices.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5007297