Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393266
S. Wada, K. Yokoh, T. Muraishi, T. Hoshina, H. Kakemoto, T. Tsurumi, C. Moriyoshi, Y. Kuroiwa
Silver lithium niobate (Ag1-xLixNbO3 ALN) single crystals with Li contents of 10 and 12.5 mol% were successfully grown by a slow cooling method. The high-energy X-ray diffraction measurement revealed that the crystal structures of both ALN10 and ALN12.5 were assigned to the coexistence between orthorhombic Pc21b and rhombohedral R3m phases. Their piezoelectric properties were investigated as a function of crystallographic direction and Li content.
{"title":"Domain Engineering of Silver Lithium Niobate Single Crystals and Their Piezoelectric Properties","authors":"S. Wada, K. Yokoh, T. Muraishi, T. Hoshina, H. Kakemoto, T. Tsurumi, C. Moriyoshi, Y. Kuroiwa","doi":"10.1109/ISAF.2007.4393266","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393266","url":null,"abstract":"Silver lithium niobate (Ag1-xLixNbO3 ALN) single crystals with Li contents of 10 and 12.5 mol% were successfully grown by a slow cooling method. The high-energy X-ray diffraction measurement revealed that the crystal structures of both ALN10 and ALN12.5 were assigned to the coexistence between orthorhombic Pc21b and rhombohedral R3m phases. Their piezoelectric properties were investigated as a function of crystallographic direction and Li content.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125438047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393213
M. Spreitzer, J. Konig, B. Jaňcar, D. Suvorov
We have investigated the dielectric tunability of the Na0.5Bi0.5TiO3 relaxor ferroelectric, modified with additions of Li3xLa(2/3)-xTiO3 (0.03lesxges0.167) and NaTaO3. These two additives have characteristics similar to incipient antiferroelectric and ferroelectric materials, respectively. The phase relations in the Na0.5Bi0.5TiO3-Li3xLa(2/3)-xTiO3 system were determined; however, this was made difficult by the slow kinetics and the thermodynamic instability of the compounds from the system. With an additives concentration of close to 10 mol% the material shows a relative dielectric tunability of up to 50%, moderate dielectric losses and a reduced temperature dependence of the dielectric constant, indicating that relaxor ferroelectrics might be promising materials for tunable applications.
{"title":"Na0.5Bi0.5TiO3-Based Voltage-Tunable Materials","authors":"M. Spreitzer, J. Konig, B. Jaňcar, D. Suvorov","doi":"10.1109/ISAF.2007.4393213","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393213","url":null,"abstract":"We have investigated the dielectric tunability of the Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> relaxor ferroelectric, modified with additions of Li<sub>3x</sub>La<sub>(2/3)-x</sub>TiO<sub>3</sub> (0.03lesxges0.167) and NaTaO<sub>3</sub>. These two additives have characteristics similar to incipient antiferroelectric and ferroelectric materials, respectively. The phase relations in the Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>-Li<sub>3x</sub>La<sub>(2/3)-x</sub>TiO<sub>3</sub> system were determined; however, this was made difficult by the slow kinetics and the thermodynamic instability of the compounds from the system. With an additives concentration of close to 10 mol% the material shows a relative dielectric tunability of up to 50%, moderate dielectric losses and a reduced temperature dependence of the dielectric constant, indicating that relaxor ferroelectrics might be promising materials for tunable applications.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121730808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393222
T. Yamamoto
Dr. Okino's contributions for piezoelectric application field will be introduced. First of all, by using piezoresponse force microscopy (PFM) and contact-resonance piezoresponse microscopy (CR-PFM), domain structures and domain-related properties of typical piezoelectric single crystal, for example PbTiO3, Pb(Mg1/3Nb2/3)O3 -PbTiO3 single crystals, were successfully observed. Four kinds of domain structures (180 c-c, 180 a-a, 90 a-a and 90 a-c domains) on grown surfaces of PbTiO3 single crystals were imaged successfully using vertical and lateral piezoresponse force microscopy (PFM). Next, the domain-structure images of (001) plates of Pb(Mg1/3Nb2/3)O3 -PbTiO3 (PMN-PT) single crystals were successfully observed in a vacuum using a contact-resonance piezoresponse force microscopy. The domain structures of (001) plates of (l-x) Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) single crystals were obtained at room temperature after 240 thermal treatment at various cooling rates. PMN -32 % PT and PMN- 34 %PT single crystals undergoes a relaxor-ferroelectric phase transition from Tetragonal phase to the Cubic phase.
{"title":"Memorial Lecture for Dr. H. Okino","authors":"T. Yamamoto","doi":"10.1109/ISAF.2007.4393222","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393222","url":null,"abstract":"Dr. Okino's contributions for piezoelectric application field will be introduced. First of all, by using piezoresponse force microscopy (PFM) and contact-resonance piezoresponse microscopy (CR-PFM), domain structures and domain-related properties of typical piezoelectric single crystal, for example PbTiO<sub>3</sub>, Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> -PbTiO<sub>3</sub> single crystals, were successfully observed. Four kinds of domain structures (180 c-c, 180 a-a, 90 a-a and 90 a-c domains) on grown surfaces of PbTiO<sub>3</sub> single crystals were imaged successfully using vertical and lateral piezoresponse force microscopy (PFM). Next, the domain-structure images of (001) plates of Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> -PbTiO<sub>3</sub> (PMN-PT) single crystals were successfully observed in a vacuum using a contact-resonance piezoresponse force microscopy. The domain structures of (001) plates of (l-x) Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3-x</sub>PbTiO<sub>3</sub> (PMN-PT) single crystals were obtained at room temperature after 240 thermal treatment at various cooling rates. PMN -32 % PT and PMN- 34 %PT single crystals undergoes a relaxor-ferroelectric phase transition from Tetragonal phase to the Cubic phase.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122738242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393413
H. Harinaka, Hideaki Takeda, Takashi Nishida, Kiyoshi Uchiyama, T. Shiosaki
As a candidate of a lead-free positive temperature coefficient of resistivitiy (PTC) themistor material, barium titanate (BaTiO3) -based solid-solution ceramics, BaTiO3-(Bi1/2K1/2)TiO3 (BBKT100x), have been synthesized by the conventional ceramic fabrication technique. The maximum temperature of the dielectric constant (Tm) of the BBKTIOOx ceramics monotonously increased with the increasing amount of x. The Tm values of the BBKTIOOx ceramics with x>0.0 were higher than that of BaTiO3 (=130degC). The peak temperature (Tp) of the pyroelectric coefficient showed that the ferroelectricity of the BBKT100x ceramics disappeared at Tm. The reduced BBKT5 ceramics show PTC characteristics as well as a semiconductivity.
{"title":"Fabrication and Characterization of Semiconductive Ceramics using BaTiO3-(Bi1/2K1/2)TiO3 System","authors":"H. Harinaka, Hideaki Takeda, Takashi Nishida, Kiyoshi Uchiyama, T. Shiosaki","doi":"10.1109/ISAF.2007.4393413","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393413","url":null,"abstract":"As a candidate of a lead-free positive temperature coefficient of resistivitiy (PTC) themistor material, barium titanate (BaTiO<sub>3</sub>) -based solid-solution ceramics, BaTiO<sub>3</sub>-(Bi<sub>1/2</sub>K<sub>1/2</sub>)TiO<sub>3</sub> (BBKT100x), have been synthesized by the conventional ceramic fabrication technique. The maximum temperature of the dielectric constant (T<sub>m</sub>) of the BBKTIOOx ceramics monotonously increased with the increasing amount of x. The Tm values of the BBKTIOOx ceramics with x>0.0 were higher than that of BaTiO<sub>3</sub> (=130degC). The peak temperature (T<sub>p</sub>) of the pyroelectric coefficient showed that the ferroelectricity of the BBKT100x ceramics disappeared at Tm. The reduced BBKT5 ceramics show PTC characteristics as well as a semiconductivity.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126337173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393359
Qiang Chen, Lin Chen, Qishou Li, Xiaoluo Shi, Zhiqiang Liu, Xi Yue, D. Xiao, Jianguo Zhu
Density K4CuNb8O23 modified (Na0.5K0.5)NbO3 (NKN:KCN) ceramics with high mechanical quality factor Qm were synthesized by using conventional mixing oxide process. The maximum value of Qm of NKN:KCN ceramics reaches up to 1150, the planar electromechanical coefficient kp of NKN:KCN ceramics maintains a relative high level, which is about 40%. Moreover, the Curie temperature of NKN:KCN ceramics is above 380 . Based upon this kind of lead-free piezoelectric ceramics, a new type of lead-free middle frequency (455 kHz) ceramic resonators were designed and produced. This kind of lead-free ceramic resonator can be used in the remote controller.
{"title":"High Qm Lead Free Sodium Potassium Niobate Piezoelectric Ceramics and Middle Frequency Resonator","authors":"Qiang Chen, Lin Chen, Qishou Li, Xiaoluo Shi, Zhiqiang Liu, Xi Yue, D. Xiao, Jianguo Zhu","doi":"10.1109/ISAF.2007.4393359","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393359","url":null,"abstract":"Density K<sub>4</sub>CuNb<sub>8</sub>O<sub>23</sub> modified (Na<sub>0.5</sub>K<sub>0.5</sub>)NbO<sub>3</sub> (NKN:KCN) ceramics with high mechanical quality factor Q<sub>m</sub> were synthesized by using conventional mixing oxide process. The maximum value of Q<sub>m</sub> of NKN:KCN ceramics reaches up to 1150, the planar electromechanical coefficient k<sub>p</sub> of NKN:KCN ceramics maintains a relative high level, which is about 40%. Moreover, the Curie temperature of NKN:KCN ceramics is above 380 . Based upon this kind of lead-free piezoelectric ceramics, a new type of lead-free middle frequency (455 kHz) ceramic resonators were designed and produced. This kind of lead-free ceramic resonator can be used in the remote controller.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"4 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127471115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393293
Jinyu Cai, Shengwen Yu, Jinrong Cheng, Ya Lu, Z. Meng
BiFeO3 -PbTiO3 (BFO-PT) films were synthesized by sol-gel method with the annealing temperatures to be 550degC, 600degC, and 650degC, respectively. The structure and morphology of the films were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The dielectric constant and loss factor are measured. The leakage current density is also performed to check the conductivity of the films. The effect of annealing temperature of the BFO-PT films on the dielectric properties is obvious with the film annealed at 600degC presenting better dielectric behavior.
{"title":"Synthesis and Dielectric properties of BiFeO3-PbTiO3 films prepared by sol-gel method","authors":"Jinyu Cai, Shengwen Yu, Jinrong Cheng, Ya Lu, Z. Meng","doi":"10.1109/ISAF.2007.4393293","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393293","url":null,"abstract":"BiFeO3 -PbTiO3 (BFO-PT) films were synthesized by sol-gel method with the annealing temperatures to be 550degC, 600degC, and 650degC, respectively. The structure and morphology of the films were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The dielectric constant and loss factor are measured. The leakage current density is also performed to check the conductivity of the films. The effect of annealing temperature of the BFO-PT films on the dielectric properties is obvious with the film annealed at 600degC presenting better dielectric behavior.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133215421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393373
Y. Sung, J. Cho, T. Song, S. Jeong, J. Song, M. Kim
An optimum composition for maximizing piezoelectric properties of (Bi0.5Na0.5)(1-x)BaxTiO3 ceramics was investigated within the range of x=0-0.1 covering rhombohedral to tetragonal phase regions of the system. A perovskite structure with two different crystal symmetries depending on the Ba content was formed with no impurity phases. A range of morphotropic phase boundary dividing rhombohedral and tetragonal phase regions was found to exist at x=0.05~0.08. As for piezoelectric properties the piezoelectric constant (d33) and the electromechanical coupling factor (Kp) showed a peak value at x=0.065 within the range tested, which was 192 pC/N and 34%, respectively, implying x=0.065 as an optimum composition for piezoelectric (Bi0.5Na0.5)(1-x)BaxTiO3 ceramics.
{"title":"Composition Dependent Piezoelectric Properties of Pb-free (Bi0.o5N0o 5)1-x) BaxTiO3 Ceramics","authors":"Y. Sung, J. Cho, T. Song, S. Jeong, J. Song, M. Kim","doi":"10.1109/ISAF.2007.4393373","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393373","url":null,"abstract":"An optimum composition for maximizing piezoelectric properties of (Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>(1-x)</sub>Ba<sub>x</sub>TiO<sub>3</sub> ceramics was investigated within the range of x=0-0.1 covering rhombohedral to tetragonal phase regions of the system. A perovskite structure with two different crystal symmetries depending on the Ba content was formed with no impurity phases. A range of morphotropic phase boundary dividing rhombohedral and tetragonal phase regions was found to exist at x=0.05~0.08. As for piezoelectric properties the piezoelectric constant (d<sub>33</sub>) and the electromechanical coupling factor (K<sub>p</sub>) showed a peak value at x=0.065 within the range tested, which was 192 pC/N and 34%, respectively, implying x=0.065 as an optimum composition for piezoelectric (Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>(1-x)</sub>Ba<sub>x</sub>TiO<sub>3</sub> ceramics.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130154503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393428
Seung-Hyun Kim, C. Koo, J. Cheon, Junghoon Yeom, H. Woo, J. Ha
A systematic investigation of dielectric and piezoelectric properties of lead-free NKN films prepared by chemical solution deposition method is performed for Na/K = 50/50 composition. Among various lead-free materials, it is clarified that NKN films can be strong candidates for replacing PZT based piezoelectric thin films due to their reasonably good piezoelectric properties even if overall properties are somewhat worse than those of PZT based piezoelectrics. These results indicate that NKN films might be a promising lead-free piezoelectric system for a wide range of bio-compatible MEMS applications.
{"title":"Lead-free Piezoelectric Thin Films for Bio-medical Applications","authors":"Seung-Hyun Kim, C. Koo, J. Cheon, Junghoon Yeom, H. Woo, J. Ha","doi":"10.1109/ISAF.2007.4393428","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393428","url":null,"abstract":"A systematic investigation of dielectric and piezoelectric properties of lead-free NKN films prepared by chemical solution deposition method is performed for Na/K = 50/50 composition. Among various lead-free materials, it is clarified that NKN films can be strong candidates for replacing PZT based piezoelectric thin films due to their reasonably good piezoelectric properties even if overall properties are somewhat worse than those of PZT based piezoelectrics. These results indicate that NKN films might be a promising lead-free piezoelectric system for a wide range of bio-compatible MEMS applications.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127881637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393420
M. Echizen, T. Kosaka, D. Fukunaga, T. Nishida, K. Uchiyama, T. Shiosaki
La-doped lead zirconate titanate (PLZT) has been applied to electro-optic (E-O) devices. We grew epitaxial PLZT thin films on alpha-Al2O3(012) single crystalline substrates fabricated by the conventional and the new sol-gel process. From result of observation by spectrophotometer, refractive index n approximately equal, were unaffected by processes. However, the average oscillator strength was different.
{"title":"Analysis of Optical Properties of Epitaxial PLZT Thin Films","authors":"M. Echizen, T. Kosaka, D. Fukunaga, T. Nishida, K. Uchiyama, T. Shiosaki","doi":"10.1109/ISAF.2007.4393420","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393420","url":null,"abstract":"La-doped lead zirconate titanate (PLZT) has been applied to electro-optic (E-O) devices. We grew epitaxial PLZT thin films on alpha-Al2O3(012) single crystalline substrates fabricated by the conventional and the new sol-gel process. From result of observation by spectrophotometer, refractive index n approximately equal, were unaffected by processes. However, the average oscillator strength was different.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121195714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-27DOI: 10.1109/ISAF.2007.4393248
E. Matsushita, H. Senki
In perovskite-type oxides, a model of proton conduction is proposed to apply to efficient fuel cells. Basing on the quantum mechanical calculation, H+ diffusivity on and between temporally made O-H-O bond and the optimum path are predicted in acceptor-doped SrTiO3, SrZrO3 and CaZrO3. At low temperatures, numerical results suggest the possibility of proton tunnneling process different from the proton jumping process at high temperatures. Furthermore, it is discussed that by changing the network of O-octahedron from corner-linked to edge-sharing type, the proton conduction becomes impossible, whereas no-quantum Li+ diffusion possible.
{"title":"Application of Proton Diffusion Analysis in Perovskite-Type Oxides","authors":"E. Matsushita, H. Senki","doi":"10.1109/ISAF.2007.4393248","DOIUrl":"https://doi.org/10.1109/ISAF.2007.4393248","url":null,"abstract":"In perovskite-type oxides, a model of proton conduction is proposed to apply to efficient fuel cells. Basing on the quantum mechanical calculation, H+ diffusivity on and between temporally made O-H-O bond and the optimum path are predicted in acceptor-doped SrTiO3, SrZrO3 and CaZrO3. At low temperatures, numerical results suggest the possibility of proton tunnneling process different from the proton jumping process at high temperatures. Furthermore, it is discussed that by changing the network of O-octahedron from corner-linked to edge-sharing type, the proton conduction becomes impossible, whereas no-quantum Li+ diffusion possible.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128424644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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