@article{oai:nitech.repo.nii.ac.jp:00002316, author = {八木, 慎太郎 and 松井, 和也 and 中谷, 学史 and 水谷, 守 and 太田, 敏孝}, journal = {セラミックス基盤工学研究センター年報 = Annual report of the Ceramics Research Laboratory Nagoya Institute of Technology}, month = {Mar}, note = {Functionally graded Pb(Mg1/3Ta2/3)O3-PbTiO3 ceramics, which had a continuously varying graded composition from one surfacetoward the other of the specimen in a material, were examined with respect to their dielectric property. Specimens were preparedby sintering superposed layers of green compact of(1-x)PMT-xPT solid solutions with different values of x. The nongraded(1-x)PMT-xPT ceramics showed the maximum relative permittivity at the Curie temperature. The Curie temperatureshifted to higher temperature with increasing x. On the other hand, the profile of relative permittivity(ε)vs temperature(T)broadened in the case of the graded(1-x)PMT-xPT ceramics. The profile became flatter by varying volume ratio of layers. Therelative permittivity was 5500±10% at the temperature range from -55 ℃ to 125 ℃ . In addition, when Cr2O3 was added as a sinteringagent, the densification and grain growth were promoted., application/pdf}, pages = {25--29}, title = {Pb(Mg1/3Ta2/3)O3-PbTiO3}, volume = {2}, year = {2003}, yomi = {ヤギ, シンタロウ and マツイ, カズヤ and ナカタニ, ノリフミ and ミズタニ, マモル and オオタ, トシタカ} }