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J M Siqueiros - One of the best experts on this subject based on the ideXlab platform.
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors iii dielectric relaxation near the transition Temperature
Journal of Applied Physics, 2006Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:Dielectric relaxation processes occurring near the ferroelectric-paraelectric phase transition of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors are discussed using microstructural and equivalent circuit modeling and the impedance spectroscopy technique. The frequency-Temperature Response was obtained from room Temperature to 300°C and from 20Hzto1Mz. In correspondence with a previous structural, morphological, and Temperature Response study, appropriate microstructural, and equivalent circuit models were established. The frequency Response study was carried out by means of the simultaneous analysis of the complex dielectric constant e and admittance Y functions and the dielectric loss, tanδ. A strong absorption near the transition Temperature region at a frequency around 1MHz is discussed and is attributed with relaxation processes associated with domain reorientation, domain wall (DW) motion, and the dipolar behavior of ferroelectric materials. Such processes were foun...
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors part ii impedance spectroscopy characterization
Journal of Applied Physics, 2005Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:The dielectric behavior of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained using the traditional ceramic method employing three different precursors was investigated by impedance spectroscopy in the Temperature range of 200–300°C. This study was carried out by means of the simultaneous analysis of the complex impedance Z, electric modulus M, and admittance Y functions from the measurements in the frequency range of 20Hz–1MHz. In correspondence to a previous structural, morphological, and Temperature Response study, appropriate microstructural and equivalent circuit models were established. Based on the brick layer model, three series of interconnected electrically distinct regions are considered: a conductive grain boundary layer, a capacitive grain boundary surface layer, and a resistive-ferroelectric bulk layer. Two conduction mechanisms were identified: a dielectric relaxation process due to localized conduction associated with the presence of oxygen vacancies and the nonlocalized conduction...
O Raymond - One of the best experts on this subject based on the ideXlab platform.
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors iii dielectric relaxation near the transition Temperature
Journal of Applied Physics, 2006Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:Dielectric relaxation processes occurring near the ferroelectric-paraelectric phase transition of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors are discussed using microstructural and equivalent circuit modeling and the impedance spectroscopy technique. The frequency-Temperature Response was obtained from room Temperature to 300°C and from 20Hzto1Mz. In correspondence with a previous structural, morphological, and Temperature Response study, appropriate microstructural, and equivalent circuit models were established. The frequency Response study was carried out by means of the simultaneous analysis of the complex dielectric constant e and admittance Y functions and the dielectric loss, tanδ. A strong absorption near the transition Temperature region at a frequency around 1MHz is discussed and is attributed with relaxation processes associated with domain reorientation, domain wall (DW) motion, and the dipolar behavior of ferroelectric materials. Such processes were foun...
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors part ii impedance spectroscopy characterization
Journal of Applied Physics, 2005Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:The dielectric behavior of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained using the traditional ceramic method employing three different precursors was investigated by impedance spectroscopy in the Temperature range of 200–300°C. This study was carried out by means of the simultaneous analysis of the complex impedance Z, electric modulus M, and admittance Y functions from the measurements in the frequency range of 20Hz–1MHz. In correspondence to a previous structural, morphological, and Temperature Response study, appropriate microstructural and equivalent circuit models were established. Based on the brick layer model, three series of interconnected electrically distinct regions are considered: a conductive grain boundary layer, a capacitive grain boundary surface layer, and a resistive-ferroelectric bulk layer. Two conduction mechanisms were identified: a dielectric relaxation process due to localized conduction associated with the presence of oxygen vacancies and the nonlocalized conduction...
R Font - One of the best experts on this subject based on the ideXlab platform.
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors iii dielectric relaxation near the transition Temperature
Journal of Applied Physics, 2006Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:Dielectric relaxation processes occurring near the ferroelectric-paraelectric phase transition of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors are discussed using microstructural and equivalent circuit modeling and the impedance spectroscopy technique. The frequency-Temperature Response was obtained from room Temperature to 300°C and from 20Hzto1Mz. In correspondence with a previous structural, morphological, and Temperature Response study, appropriate microstructural, and equivalent circuit models were established. The frequency Response study was carried out by means of the simultaneous analysis of the complex dielectric constant e and admittance Y functions and the dielectric loss, tanδ. A strong absorption near the transition Temperature region at a frequency around 1MHz is discussed and is attributed with relaxation processes associated with domain reorientation, domain wall (DW) motion, and the dipolar behavior of ferroelectric materials. Such processes were foun...
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors part ii impedance spectroscopy characterization
Journal of Applied Physics, 2005Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:The dielectric behavior of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained using the traditional ceramic method employing three different precursors was investigated by impedance spectroscopy in the Temperature range of 200–300°C. This study was carried out by means of the simultaneous analysis of the complex impedance Z, electric modulus M, and admittance Y functions from the measurements in the frequency range of 20Hz–1MHz. In correspondence to a previous structural, morphological, and Temperature Response study, appropriate microstructural and equivalent circuit models were established. Based on the brick layer model, three series of interconnected electrically distinct regions are considered: a conductive grain boundary layer, a capacitive grain boundary surface layer, and a resistive-ferroelectric bulk layer. Two conduction mechanisms were identified: a dielectric relaxation process due to localized conduction associated with the presence of oxygen vacancies and the nonlocalized conduction...
J Portelles - One of the best experts on this subject based on the ideXlab platform.
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors iii dielectric relaxation near the transition Temperature
Journal of Applied Physics, 2006Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:Dielectric relaxation processes occurring near the ferroelectric-paraelectric phase transition of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors are discussed using microstructural and equivalent circuit modeling and the impedance spectroscopy technique. The frequency-Temperature Response was obtained from room Temperature to 300°C and from 20Hzto1Mz. In correspondence with a previous structural, morphological, and Temperature Response study, appropriate microstructural, and equivalent circuit models were established. The frequency Response study was carried out by means of the simultaneous analysis of the complex dielectric constant e and admittance Y functions and the dielectric loss, tanδ. A strong absorption near the transition Temperature region at a frequency around 1MHz is discussed and is attributed with relaxation processes associated with domain reorientation, domain wall (DW) motion, and the dipolar behavior of ferroelectric materials. Such processes were foun...
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors part ii impedance spectroscopy characterization
Journal of Applied Physics, 2005Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:The dielectric behavior of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained using the traditional ceramic method employing three different precursors was investigated by impedance spectroscopy in the Temperature range of 200–300°C. This study was carried out by means of the simultaneous analysis of the complex impedance Z, electric modulus M, and admittance Y functions from the measurements in the frequency range of 20Hz–1MHz. In correspondence to a previous structural, morphological, and Temperature Response study, appropriate microstructural and equivalent circuit models were established. Based on the brick layer model, three series of interconnected electrically distinct regions are considered: a conductive grain boundary layer, a capacitive grain boundary surface layer, and a resistive-ferroelectric bulk layer. Two conduction mechanisms were identified: a dielectric relaxation process due to localized conduction associated with the presence of oxygen vacancies and the nonlocalized conduction...
N Suarezalmodovar - One of the best experts on this subject based on the ideXlab platform.
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors iii dielectric relaxation near the transition Temperature
Journal of Applied Physics, 2006Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:Dielectric relaxation processes occurring near the ferroelectric-paraelectric phase transition of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained by different precursors are discussed using microstructural and equivalent circuit modeling and the impedance spectroscopy technique. The frequency-Temperature Response was obtained from room Temperature to 300°C and from 20Hzto1Mz. In correspondence with a previous structural, morphological, and Temperature Response study, appropriate microstructural, and equivalent circuit models were established. The frequency Response study was carried out by means of the simultaneous analysis of the complex dielectric constant e and admittance Y functions and the dielectric loss, tanδ. A strong absorption near the transition Temperature region at a frequency around 1MHz is discussed and is attributed with relaxation processes associated with domain reorientation, domain wall (DW) motion, and the dipolar behavior of ferroelectric materials. Such processes were foun...
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frequency Temperature Response of ferroelectromagnetic pb fe1 2nb1 2 o3 ceramics obtained by different precursors part ii impedance spectroscopy characterization
Journal of Applied Physics, 2005Co-Authors: O Raymond, R Font, J Portelles, N Suarezalmodovar, J M SiqueirosAbstract:The dielectric behavior of ferroelectromagnetic Pb(Fe1∕2Nb1∕2)O3 ceramics obtained using the traditional ceramic method employing three different precursors was investigated by impedance spectroscopy in the Temperature range of 200–300°C. This study was carried out by means of the simultaneous analysis of the complex impedance Z, electric modulus M, and admittance Y functions from the measurements in the frequency range of 20Hz–1MHz. In correspondence to a previous structural, morphological, and Temperature Response study, appropriate microstructural and equivalent circuit models were established. Based on the brick layer model, three series of interconnected electrically distinct regions are considered: a conductive grain boundary layer, a capacitive grain boundary surface layer, and a resistive-ferroelectric bulk layer. Two conduction mechanisms were identified: a dielectric relaxation process due to localized conduction associated with the presence of oxygen vacancies and the nonlocalized conduction...
