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Static and high frequency magnetic and dielectric properties of ferrite-ferroelectric composite materials
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10.1063/1.2357990
/content/aip/journal/jap/100/8/10.1063/1.2357990
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/8/10.1063/1.2357990

Figures

Image of FIG. 1.
FIG. 1.

X-ray diffraction results for all the samples as indicated. The solid circles, squares, and triangles indicate the main peaks for the BSTO, the ferrite phase, and the Ti–O phase.

Image of FIG. 2.
FIG. 2.

Average saturation magnetic induction as a function of ferrite loading . The data were obtained for an applied magnetic field of . The solid circles show the data for the composites. The solid square shows the value for the commercial TT2-111 ferrite. The solid line shows the linear response expected for an unmodified ferrite phase.

Image of FIG. 3.
FIG. 3.

Average magnetic induction as a function of the applied magnetic field for the different ferrite loadings, as indicated. The inset shows an enlarged view for samples with loadings of , 6, and .

Image of FIG. 4.
FIG. 4.

Saturation field , initial susceptibility , and coercive force as functions of ferrite loading . The solid circles in (a) show the saturation field data. The dashed line corresponds to , where is the value for the sample. The solid circles in (b) show the susceptibility parameter data. The solid line corresponds to and the dashed line corresponds to . The solid circles in (c) show the coercive force data.

Image of FIG. 5.
FIG. 5.

Ferromagnetic resonance profiles at . The (a) graphs show the measured derivative of the absorbed power vs applied magnetic field profiles for the TT2-111, 100, 27, and samples, as indicated. The (b) graphs show the integrated profiles for the derivative profiles in (a).

Image of FIG. 6.
FIG. 6.

Reduced cavity frequency shift as a function of the dispersion parameter for the different ferrite loadings, as indicated. The solid lines show linear fits to the different data sets. The inset shows the response slope parameter as a function of the ferrite loading . The solid circles in the inset show the slopes of line fits in the main graph, and the line shows the calculated theoretical response based on microwave perturbation theory.

Image of FIG. 7.
FIG. 7.

Reduced sample loss parameter as a function of the absorption parameter , for the different loadings of the ferrite, as indicated. The inset shows the calculated effective linewidth as a function of ferrite loading .

Image of FIG. 8.
FIG. 8.

Relative dielectric constant as a function of the ferrite loading . The solid circles show the data. The open circles show the data. The dashed curve is a calculation based on the Maxwell-Garnett model and the solid curve is a calculation based on the Lichtenecker model for inclusions in a dielectric matrix.

Image of FIG. 9.
FIG. 9.

Loss tangent as a function of ferrite loading . The solid circles are the data at , whereas the open circles are the data at . The inset shows the low data on an expanded scale.

Image of FIG. 10.
FIG. 10.

Normalized tunability as a function of ferrite loading . The open and solid circles show the data for electric field values of 2 and , respectively.

Tables

Generic image for table
Table I.

Summary of ferromagnetic resonance (FMR) and effective linewidth measurement results.

Generic image for table
Table II.

Summary of dielectric property measurements.

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/content/aip/journal/jap/100/8/10.1063/1.2357990
2006-10-20
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Static and high frequency magnetic and dielectric properties of ferrite-ferroelectric composite materials
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/8/10.1063/1.2357990
10.1063/1.2357990
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