Article(id=1322636217993249340, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636193100050547, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20200181, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1584374400000, receivedDateStr=2020-03-17, revisedDate=1586275200000, revisedDateStr=2020-04-08, acceptedDate=null, acceptedDateStr=null, onlineDate=1793270647762, onlineDateStr=2026-10-29, pubDate=1600531200000, pubDateStr=2020-09-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793270647762, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793270647762, creator=13701087609, updateTime=1793270647762, updator=13701087609, issue=Issue{id=1322636193100050547, tenantId=1146029695717560320, journalId=1263187385517883426, year='2020', volume='48', issue='9', pageStart='1353', pageEnd='1510', issueExtLink='null', onlineDate='null', pubDate='1594569600000', pubDateStr='2020-07-13', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793270641826, creator='13701087609', updateTime=1793270641826, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=1405, endPage=1413, ext={EN=ArticleExt(id=1322636218177798717, articleId=1322636217993249340, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Dielectric Properties and Impedance of BaTiO3@Ag Core-shell Composite Ceramic, columnId=null, journalTitle=Journal of the Chinese Ceramic Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Silver (Ag) was coated on the surface of nano-sized BaTiO3 powder by a chemical coating method, and BaTiO3@Ag composite ceramic was prepared by a solid-state method. The effect of Ag content on the composition, fracture surface microstructure, dielectric properties, and impedance spectroscopy of ceramics were investigated. The results indicate that BaTiO3@Ag composite ceramic is a core-shell structure, and the main phase is a pure perovskite phase. BaTiO3@Ag composite ceramic contains fine and homogeneous grains. The dielectric constant and loss decrease with increasing of Ag content and the δmin is 0.004 87. The curie peaks widen, and the diffusion factor γ increases from 1.08 to 1.42. The thermal stability is improved due to the Ag introduction. The temperature stability coefficient decreases from 0.194 0 to 0.004 8. In addition, the dielectric relaxation of BaTiO3@Ag composite ceramic occurs at 200 ℃. The conductance activation energy and relaxation activation energy determined by impedance spectroscopy show that the relaxation phenomena occurs due to the short jump of the defective dipoles, which are formed by the conducting electrons generated from the double ionization of the oxygen vacancy and the surrounding ions.

, authors=Cuiying MA, Huiling DU, Jia LIU, Xian DU, Ke YU, Xueyan XI, Hongpei RAN, authorsList=Cuiying MA, Huiling DU, Jia LIU, Xian DU, Ke YU, Xueyan XI, Hongpei RAN, authorCompany=null, correspAuthors=Huiling DU, authorNote=

MA Cuiying (1984-), female, Doctoral candidate. E-mail:

, correspAuthorsNote=
DU Huiling (1972-), female, Professor. E-mail:
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采用化学沉淀法还原制备了不同Ag含量[0%、1%、3%、5%(质量分数)]包覆的BaTiO3纳米颗粒,通过烧结制备出BaTiO3@Ag复合陶瓷。研究了复合陶瓷的相组成、微观形貌、介电性能以及阻抗谱。结果表明:Ag包覆后BaTiO3颗粒呈“核-壳”结构,主相为单一钙钛矿相,烧结陶瓷晶粒细化均匀。随着Ag包覆量的增加,BaTiO3@Ag复合陶瓷的峰值介电常数和损耗均降低,损耗最小为0.00487。Curie峰弥散展宽,弥散因子γ从1.08提高到1.42。温度稳定性提高,介电常数温度稳定性系数TCP由0.194降低到0.0048。另外,BaTiO3@Ag复合陶瓷在200 ℃左右出现热激活介电弛豫现象,阻抗谱计算拟合所得电导激活能和弛豫激活能表明,此类弛豫现象由氧空位的双电离产生的导电电子与周围离子形成的缺陷偶极子短程跳跃所引起。

, authors=马翠英, 杜慧玲, 刘佳, 杜娴, 袁科, 郗雪艳, 冉宏培, authorsList=马翠英, 杜慧玲, 刘佳, 杜娴, 袁科, 郗雪艳, 冉宏培, authorCompany=null, correspAuthors=杜慧玲, authorNote=

马翠英(1984—),女,博士研究生。

, correspAuthorsNote=
杜慧玲(1972—),女,教授。
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马翠英(1984—),女,博士研究生。

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核-壳结构BaTiO3@Ag复合陶瓷的介电性能及阻抗谱
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马翠英 , 杜慧玲 , 刘佳 , 杜娴 , 袁科 , 郗雪艳 , 冉宏培
硅酸盐学报 | 2020,48(9): 1405-1413
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硅酸盐学报 | 2020 , 48 (9) : 1405 -1413
核-壳结构BaTiO3@Ag复合陶瓷的介电性能及阻抗谱
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马翠英 , 杜慧玲 , 刘佳, 杜娴, 袁科, 郗雪艳, 冉宏培
作者信息
  • 西安科技大学材料科学与工程学院,西安 710054
通讯作者:
杜慧玲(1972—),女,教授。
作者简介:

马翠英(1984—),女,博士研究生。

Dielectric Properties and Impedance of BaTiO3@Ag Core-shell Composite Ceramic
Cuiying MA , Huiling DU , Jia LIU, Xian DU, Ke YU, Xueyan XI, Hongpei RAN
Affiliations
  • College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
  • Corresponding Author:
    DU Huiling (1972-), female, Professor. E-mail:

    MA Cuiying (1984-), female, Doctoral candidate. E-mail:

出版时间: 2020-09-20 doi: 10.14062/j.issn.0454-5648.20200181
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采用化学沉淀法还原制备了不同Ag含量[0%、1%、3%、5%(质量分数)]包覆的BaTiO3纳米颗粒,通过烧结制备出BaTiO3@Ag复合陶瓷。研究了复合陶瓷的相组成、微观形貌、介电性能以及阻抗谱。结果表明:Ag包覆后BaTiO3颗粒呈“核-壳”结构,主相为单一钙钛矿相,烧结陶瓷晶粒细化均匀。随着Ag包覆量的增加,BaTiO3@Ag复合陶瓷的峰值介电常数和损耗均降低,损耗最小为0.00487。Curie峰弥散展宽,弥散因子γ从1.08提高到1.42。温度稳定性提高,介电常数温度稳定性系数TCP由0.194降低到0.0048。另外,BaTiO3@Ag复合陶瓷在200 ℃左右出现热激活介电弛豫现象,阻抗谱计算拟合所得电导激活能和弛豫激活能表明,此类弛豫现象由氧空位的双电离产生的导电电子与周围离子形成的缺陷偶极子短程跳跃所引起。

化学沉淀  /  钛酸钡  /  核-壳结构  /  介电性能  /  介电弛豫

Silver (Ag) was coated on the surface of nano-sized BaTiO3 powder by a chemical coating method, and BaTiO3@Ag composite ceramic was prepared by a solid-state method. The effect of Ag content on the composition, fracture surface microstructure, dielectric properties, and impedance spectroscopy of ceramics were investigated. The results indicate that BaTiO3@Ag composite ceramic is a core-shell structure, and the main phase is a pure perovskite phase. BaTiO3@Ag composite ceramic contains fine and homogeneous grains. The dielectric constant and loss decrease with increasing of Ag content and the δmin is 0.004 87. The curie peaks widen, and the diffusion factor γ increases from 1.08 to 1.42. The thermal stability is improved due to the Ag introduction. The temperature stability coefficient decreases from 0.194 0 to 0.004 8. In addition, the dielectric relaxation of BaTiO3@Ag composite ceramic occurs at 200 ℃. The conductance activation energy and relaxation activation energy determined by impedance spectroscopy show that the relaxation phenomena occurs due to the short jump of the defective dipoles, which are formed by the conducting electrons generated from the double ionization of the oxygen vacancy and the surrounding ions.

chemical coating method  /  barium titanate  /  core-shell structure  /  dielectric properties  /  dielectric relaxation
马翠英, 杜慧玲, 刘佳, 杜娴, 袁科, 郗雪艳, 冉宏培. 核-壳结构BaTiO3@Ag复合陶瓷的介电性能及阻抗谱. 硅酸盐学报, 2020 , 48 (9) : 1405 -1413 . DOI: 10.14062/j.issn.0454-5648.20200181
Cuiying MA, Huiling DU, Jia LIU, Xian DU, Ke YU, Xueyan XI, Hongpei RAN. Dielectric Properties and Impedance of BaTiO3@Ag Core-shell Composite Ceramic[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (9) : 1405 -1413 . DOI: 10.14062/j.issn.0454-5648.20200181
  • 国家自然科学基金(51372197)
  • 陕西省重点科技创新团队(2014KCT-04)
  • 陕西省自然科学基础研究计划(2019JQ-806)
  • 陕西省教育厅科学研究计划(19JK0525)
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2020年第48卷第9期
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doi: 10.14062/j.issn.0454-5648.20200181
  • 接收时间:2020-03-17
  • 首发时间:2026-10-29
  • 出版时间:2020-09-20
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  • 收稿日期:2020-03-17
  • 修回日期:2020-04-08
基金
国家自然科学基金(51372197)
陕西省重点科技创新团队(2014KCT-04)
陕西省自然科学基础研究计划(2019JQ-806)
陕西省教育厅科学研究计划(19JK0525)
作者信息
    西安科技大学材料科学与工程学院,西安 710054

通讯作者:

杜慧玲(1972—),女,教授。
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2种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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