<abstract xmlns="http://www.w3.org/1999/xhtml">M-type strontium ferrite with compositions SrFe(12-2x)CoxTixO19 (x = 0.0, 0.3, 0.5, 0.7, 1.0), were prepared by two route ceramic method. The effects of Co–Ti substitution on their microstructure, electromagnetic properties, and microwave absorptive behavior were analyzed. The complex permittivity (∊′-j∊″) and complex permeability (μ′-jμ″) have been measured from 8.2 to 12.4 GHz using a network analyzer. Scanning electron microscope was used to analyze the grain size distribution and porosity of the ferrite. X-ray diffraction confirmed the M-type structure of the doped strontium ferrite. Vibrating sample magnetometer was used to study hysteresis loop of the ferrite. This study suggests that the control of grain size, decrease in coercivity and enhanced values of dielectric constant and loss are effective means to improve microwave absorption. The dielectric constant and loss were enhanced in comparison to the permeability constant and loss over the entire frequency range.</abstract>

M-type strontium ferrite with compositions SrFe(12-2x)CoxTixO19 (x = 0.0, 0.3, 0.5, 0.7, 1.0), were prepared by two route ceramic method. The effects of Co–Ti substitution on their microstructure, electromagnetic properties, and microwave absorptive behavior were analyzed. The complex permittivity (∊′-j∊″) and complex permeability (μ′-jμ″) have been measured from 8.2 to 12.4 GHz using a network analyzer. Scanning electron microscope was used to analyze the grain size distribution and porosity of the ferrite. X-ray diffraction confirmed the M-type structure of the doped strontium ferrite. Vibrating sample magnetometer was used to study hysteresis loop of the ferrite. This study suggests that the control of grain size, decrease in coercivity and enhanced values of dielectric constant and loss are effective means to improve microwave absorption. The dielectric constant and loss were enhanced in comparison to the permeability constant and loss over the entire frequency range.

Complex permittivity, permeability and microwave absorbing properties of Co–Ti substituted strontium hexaferrite

Guru Nanak Dev University, Amritsar, Punjab,

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

M-type strontium ferrite with compositions SrFe(12-2x)CoxTixO19 (x = 0.0, 0.3, 0.5, 0.7, 1.0), were prepared by two route ceramic method. The effects of Co–Ti...

Complex permittivity, permeability and microwave absorbing properties of Co–Ti substituted strontium hexaferrite

Article Category: Research Article

Online veröffentlicht: 27. Apr. 2016

Seitenbereich: 19 - 24

Eingereicht: 04. Feb. 2015

Akzeptiert: 16. Nov. 2015

DOI: https://doi.org/10.1515/msp-2016-0008

Schlüsselwörter
dielectric properties, hexaferrites, magnetic properties

© Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

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Fig. 6.

Complex permittivity, permeability and microwave absorbing properties of Co–Ti substituted strontium hexaferrite

Article Category: Research Article

Online veröffentlicht: 27. Apr. 2016

Seitenbereich: 19 - 24

Eingereicht: 04. Feb. 2015

Akzeptiert: 16. Nov. 2015

DOI: https://doi.org/10.1515/msp-2016-0008

Schlüsselwörterdielectric properties, hexaferrites, magnetic properties

© Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Schlüsselwörter
dielectric properties, hexaferrites, magnetic properties