Occupational sites and dielectric properties of rare-earth and Mn substituted BaTiO3
The effect of re-oxidation treatment on the solubility in dopants and the dielectric properties of La-Mn and Ho-Mn-substituted BaTiO3 (ABO3) were investigated. The lattice parameter and electrical resistivity results indicated that La ions occupied A-sites and Ho ions occupied both A- and B-sites. I...
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| Veröffentlicht in: | Journal of the European Ceramic Society 2001, Vol.21 (10-11), p.1643-1647 |
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| container_end_page | 1647 |
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| container_issue | 10-11 |
| container_start_page | 1643 |
| container_title | Journal of the European Ceramic Society |
| container_volume | 21 |
| creator | KISHI, Hiroshi KOHZU, Noriyuki IGUCHI, Yoshiaki SUGINO, Junichi KATO, Makoto OHSATO, Hitoshi OKUDA, Takashi |
| description | The effect of re-oxidation treatment on the solubility in dopants and the dielectric properties of La-Mn and Ho-Mn-substituted BaTiO3 (ABO3) were investigated. The lattice parameter and electrical resistivity results indicated that La ions occupied A-sites and Ho ions occupied both A- and B-sites. In the case of Ho-Mn-substituted samples, the decrease in lattice parameter and a shift of the Curie point (Tc) to higher temperatures by re- oxidation treatment were observed in the range in which Ho ions predominantly occupy B-sites as acceptors. On the other hand, La-Mn-substituted samples showed little change. Electron spin resonance measurements revealed that these changes due to re-oxidation are based on the decrease of the ionic size of Mn due to the oxidation of Mn2+ to Mn3+ or Mn4+. The occupational sites of Ho ions strongly affected the valence state of Mn and the dielectric properties of BaTiO3. 8 refs. |
| doi_str_mv | 10.1016/s0955-2219(01)00083-8 |
| format | Article |
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The lattice parameter and electrical resistivity results indicated that La ions occupied A-sites and Ho ions occupied both A- and B-sites. In the case of Ho-Mn-substituted samples, the decrease in lattice parameter and a shift of the Curie point (Tc) to higher temperatures by re- oxidation treatment were observed in the range in which Ho ions predominantly occupy B-sites as acceptors. On the other hand, La-Mn-substituted samples showed little change. Electron spin resonance measurements revealed that these changes due to re-oxidation are based on the decrease of the ionic size of Mn due to the oxidation of Mn2+ to Mn3+ or Mn4+. The occupational sites of Ho ions strongly affected the valence state of Mn and the dielectric properties of BaTiO3. 8 refs.</description><identifier>ISSN: 0955-2219</identifier><identifier>EISSN: 1873-619X</identifier><identifier>DOI: 10.1016/s0955-2219(01)00083-8</identifier><language>eng</language><publisher>Oxford: Elsevier</publisher><subject>Applied sciences ; Building materials. Ceramics. 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The lattice parameter and electrical resistivity results indicated that La ions occupied A-sites and Ho ions occupied both A- and B-sites. In the case of Ho-Mn-substituted samples, the decrease in lattice parameter and a shift of the Curie point (Tc) to higher temperatures by re- oxidation treatment were observed in the range in which Ho ions predominantly occupy B-sites as acceptors. On the other hand, La-Mn-substituted samples showed little change. Electron spin resonance measurements revealed that these changes due to re-oxidation are based on the decrease of the ionic size of Mn due to the oxidation of Mn2+ to Mn3+ or Mn4+. The occupational sites of Ho ions strongly affected the valence state of Mn and the dielectric properties of BaTiO3. 8 refs.</description><subject>Applied sciences</subject><subject>Building materials. Ceramics. Glasses</subject><subject>Ceramic industries</subject><subject>Chemical industry and chemicals</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Dielectric properties of solids and liquids</subject><subject>Dielectric, piezoelectric, ferroelectric and antiferroelectric materials</subject><subject>Dielectrics, piezoelectrics, and ferroelectrics and their properties</subject><subject>Electrotechnical and electronic ceramics</subject><subject>Exact sciences and technology</subject><subject>Niobates, titanates, tantalates, pzt ceramics, etc</subject><subject>Permittivity (dielectric function)</subject><subject>Physics</subject><subject>Technical ceramics</subject><issn>0955-2219</issn><issn>1873-619X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNpNkM1LxDAQxYMouK7-CUIPInqoTpI2TY66-AUre3AFb2GapBjptmuSHvzv7X4gnubwfu_NzCPknMINBSpuI6iyzBmj6groNQBInssDMqGy4rmg6uOQTP6QY3IS4xcArUCpCVkujBnWmHzfYZtFn1zMsLOZ9a51JgVvsnXo1y4kPyp9kwUMLncY0ueWe-2yONQx-TQkZ7N7XPoFPyVHDbbRne3nlLw_Pixnz_l88fQyu5vnhguacmGo5UxJqUTBC1UDVoZb5awqamltwQS6UReydACsorJuKoFYWidLxsfnpuRylzue-D24mPTKR-PaFjvXD1EzIQoQio1guQNN6GMMrtHr4FcYfjQFvelQv20K0puCNFC97VDL0XexX4DRYNsE7IyP_8xjNi34L_6fcSc</recordid><startdate>2001</startdate><enddate>2001</enddate><creator>KISHI, Hiroshi</creator><creator>KOHZU, Noriyuki</creator><creator>IGUCHI, Yoshiaki</creator><creator>SUGINO, Junichi</creator><creator>KATO, Makoto</creator><creator>OHSATO, Hitoshi</creator><creator>OKUDA, Takashi</creator><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>2001</creationdate><title>Occupational sites and dielectric properties of rare-earth and Mn substituted BaTiO3</title><author>KISHI, Hiroshi ; KOHZU, Noriyuki ; IGUCHI, Yoshiaki ; SUGINO, Junichi ; KATO, Makoto ; OHSATO, Hitoshi ; OKUDA, Takashi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-6c1d32988964349b0a7c3d9ed94b8dd426ae329685e002718bf76aa5de8523873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Applied sciences</topic><topic>Building materials. Ceramics. 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The lattice parameter and electrical resistivity results indicated that La ions occupied A-sites and Ho ions occupied both A- and B-sites. In the case of Ho-Mn-substituted samples, the decrease in lattice parameter and a shift of the Curie point (Tc) to higher temperatures by re- oxidation treatment were observed in the range in which Ho ions predominantly occupy B-sites as acceptors. On the other hand, La-Mn-substituted samples showed little change. Electron spin resonance measurements revealed that these changes due to re-oxidation are based on the decrease of the ionic size of Mn due to the oxidation of Mn2+ to Mn3+ or Mn4+. The occupational sites of Ho ions strongly affected the valence state of Mn and the dielectric properties of BaTiO3. 8 refs.</abstract><cop>Oxford</cop><pub>Elsevier</pub><doi>10.1016/s0955-2219(01)00083-8</doi><tpages>5</tpages></addata></record> |
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| subjects | Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric properties of solids and liquids Dielectric, piezoelectric, ferroelectric and antiferroelectric materials Dielectrics, piezoelectrics, and ferroelectrics and their properties Electrotechnical and electronic ceramics Exact sciences and technology Niobates, titanates, tantalates, pzt ceramics, etc Permittivity (dielectric function) Physics Technical ceramics |
| title | Occupational sites and dielectric properties of rare-earth and Mn substituted BaTiO3 |
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