2010 Electrical, Dielectric, Optical, and Magnetic Prop Archives | The American Ceramic Society

2010 Electrical, Dielectric, Optical, and Magnetic Prop

Structural and Electrical Properties of Lead-Free Perovskite Ba(Al1/2Nb1/2)O3

By / January 26, 2010

Volume 93 Issue 1, Pages 190 – 196 Kamal Prasad, Kumar Prabhat Chandra, Sanjay Bhagat, Shambhu Nath Choudhary, Ajit R. KulkarniPublished Online: Nov 11 2009 2:40PMDOI: 10.1111/j.1551-2916.2009.03394.x ABSTRACT Lead-free perovskite Ba(Al1/2Nb1/2)O3 was prepared by conventional ceramic fabrication technique at 1350°C/5 h in air atmosphere. The crystal symmetry, space group and unit cell dimensions were determined…

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Enhancement of Giant Dielectric Response in CaCu3Ti4O12 Ceramics by Zn Substitution

By / January 26, 2010

Volume 93 Issue 1, Pages 184 – 189 Lei Ni, Xiang Ming ChenPublished Online: Oct 29 2009 4:24PMDOI: 10.1111/j.1551-2916.2009.03384.x ABSTRACT Zn-substituted CaCu3Ti4O12 ceramics were synthesized by solid-state sintering. Their microstructures and dielectric properties were investigated. Ca(Cu1-xZnx)3Ti4O12 single-phase structures were obtained up to x=0.1, and the Cu+/Cu2+ and Ti3+/Ti4+ mixed-valent structure was enhanced with increasing Zn…

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Oxygen Diffusivities and Surface Exchange Coefficients in Porous Mullite/Zirconia Composites Measured by the Conductivity Relaxation Method

By / January 26, 2010

Volume 93 Issue 1, Pages 176 – 183 Hong-Da Ko, Chien-Cheng LinPublished Online: Oct 23 2009 10:28AMDOI: 10.1111/j.1551-2916.2009.03382.x ABSTRACT Oxygen diffusivities and surface exchange coefficients in various porous mullite/zirconia composites were measured at oxygen partial pressures ranging from 20.2 to 2.02 kPa using the conductivity relaxation method. However, the oxygen diffusivities in porous high-zirconia composites…

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Formation of Core-Shell Structure in Ultrafine-Grained BaTiO3-Based Ceramics Through Nanodopant Method

By / January 26, 2010

Volume 93 Issue 1, Pages 171 – 175 Zhibin Tian, Xiaohui Wang, Yichi Zhang, Jian Fang, Tae-Ho Song, Kang Heon Hur, Seungju Lee, Longtu LiPublished Online: Oct 29 2009 4:21PMDOI: 10.1111/j.1551-2916.2009.03371.x ABSTRACT The formation of core-shell structure is the key issue of temperature stable barium titanate-based dielectric ceramic for multilayer ceramic capacitor application. It is…

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Microstructure and Electrical Properties of (K, Na, Li)NbO3–Pb(Zr,Ti)O3 Piezoelectric Ceramics

By / January 26, 2010

Volume 93 Issue 1, Pages 167 – 170 Qiyi Yin, Shuoguo Yuan, Qiang Dong, Changan TianPublished Online: Oct 23 2009 10:27AMDOI: 10.1111/j.1551-2916.2009.03367.x ABSTRACT A new type (1-x)(K0.485Na0.485Li0.03)NbO3-xPb(Zr0.53Ti0.47)O3 piezoelectric ceramics was fabricated by conventional ceramics sintering technique. Their microstructure and electrical properties of the ceramics were also studied. X-ray diffraction and scanning electron microscopy patterns indicate…

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Microstructure–Dielectric Properties Relationship in Ba0.6Sr0.4TiO3–Mg2SiO4–Al2O3 Composite Ceramics

By / January 26, 2010

Volume 93 Issue 1, Pages 161 – 166 Ying Chen, Yuan-Yuan Zhang, Xian-Lin Dong, Gen-Shui Wang, Fei CaoPublished Online: Oct 29 2009 4:22PMDOI: 10.1111/j.1551-2916.2009.03376.x ABSTRACT 0.60Ba0.6Sr0.4TiO3(BST)-(0.40-x)Mg2SiO4(MS)-xAl2O3 (x=0, 0.5, 3, 5wt%) composite ceramics exhibit excellent characteristics suitable for tunable device applications. With increasing amount of Al, the dielectric peak can be quantitatively broadened and suppressed; the…

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Microwave Dielectric Properties of (Sr1−xAx)2(Zn1−xBx)Si2O7 Ceramics (A=Ca, Ba and B=Co, Mg, Mn, Ni)

By / January 26, 2010

Volume 93 Issue 1, Pages 147 – 154 Tony Joseph, Mailadil T. SebastianPublished Online: Oct 29 2009 6:04PMDOI: 10.1111/j.1551-2916.2009.03370.x ABSTRACTThe (Sr1-xAx)2(Zn1-xBx)Si2O7 ceramics (A=Ca, Ba and B=Co, Mg, Mn, Ni) were prepared by the conventional solid-state ceramic route and their structure and microwave dielectric properties were investigated. The majority of the compositions have an akermanite-type structure…

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Synthesis and Characterization of Nanostructured Cerium Dioxide Thin Films Deposited by Ultrasonic Spray Pyrolysis

By / January 26, 2010

Volume 93 Issue 1, Pages 155 – 160 Mario F. García-Sánchez, Armando Ortiz, Guillermo Santana, Monserrat Bizarro, Juan Peña, Francisco Cruz-Gandarilla, Miguel A. Aguilar-Frutis, Juan C. AlonsoPublished Online: Oct 20 2009 1:35PMDOI: 10.1111/j.1551-2916.2009.03374.x ABSTRACT Nanostructured thin films of cerium dioxide have been prepared on single-crystalline silicon substrates by ultrasonic spray pyrolysis using cerium acetylacetonate as…

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Na+-Doped Zinc Oxide Nanofiber Membrane for High Speed Humidity Sensor

By / January 26, 2010

Volume 93 Issue 1, Pages 142 – 146 Hongnan Zhang, Zhenyu Li, Wei Wang, Ce Wang, Li LiuPublished Online: Oct 14 2009 11:42AMDOI: 10.1111/j.1551-2916.2009.03341.x ABSTRACTA novel sensitive humidity nanosensor based on Na+-doped ZnO nanofiber membrane has been prepared via electrospinning and calcination. The product was characterized by scanning electron microscopy and X-ray diffraction. During the…

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Luminescence and Site Symmetry Studies of New Red Phosphors (Ca, Ba)3(VO4)2:Eu3+ Under Blue Excitation

By / January 26, 2010


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