Broadband magnetic and dielectric properties of U-type hexaferrite Sr4CoZnFe36O60

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00584974" target="_blank" >RIV/68378271:_____/24:00584974 - isvavai.cz</a>
Alternative codes found
RIV/61388980:_____/24:00584974 RIV/68407700:21340/24:00370464
Result on the web
<a href="https://doi.org/10.1016/j.jmmm.2023.171533" target="_blank" >https://doi.org/10.1016/j.jmmm.2023.171533</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2023.171533" target="_blank" >10.1016/j.jmmm.2023.171533</a>

Result language
angličtina
Original language name
Broadband magnetic and dielectric properties of U-type hexaferrite Sr4CoZnFe36O60
Original language description
Ceramics with U-type hexaferrite crystal structure were for the first time prepared and their structural, dielectric, magnetic and magnetoelectric properties were characterized. Broadband dielectric spectra (1 Hz − 1 GHz) showed giant permittivity due to two Maxwell-Wagner dielectric relaxations whose frequencies follow the Arrhenius law. These relaxations are caused by inhomogeneous conductivity in the ceramic grains and their boundaries. Temperature and magnetic field dependences of magnetization revealed a ferrimagnetic phase transition and other two magnetic phase transitions. Very small polarization at 10 K has probably extrinsic origin, so the sample is probably not multiferroic. High-frequency magnetic permeability measured up to 1.8 GHz evidences the Curie-Weiss behavior above Tc2 and Tc3 and two magnetic field-dependent excitations which exhibit anomalies at magnetic phase transitions. We attributed these excitations to the magnetic domain wall dynamics.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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