Article(id=1323704689560256831, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323704676520177870, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1159200000000, receivedDateStr=2006-09-26, revisedDate=1167840000000, revisedDateStr=2007-01-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1793525391235, onlineDateStr=2026-11-01, pubDate=1188921600000, pubDateStr=2007-09-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793525391235, onlineIssueDateStr=2026-11-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793525391235, creator=13701087609, updateTime=1793525391235, updator=13701087609, issue=Issue{id=1323704676520177870, tenantId=1146029695717560320, journalId=1255847867265597444, year='2007', volume='21', issue='3', pageStart='225', pageEnd='336', issueExtLink='null', onlineDate='null', pubDate='1188921600000', pubDateStr='2007-09-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793525388126, creator='13701087609', updateTime=1793525388126, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=249, endPage=252, ext={EN=ArticleExt(id=1323704689732223296, articleId=1323704689560256831, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Structure and Ferroelectric Properties of Dense Nanocrystalline BaTiO₃ Ceramics Prepared by High Pressure Sintering Method, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Dense nanocrystalline BaTiO₃ ceramics with a grain size of 50 nm were prepared under 6 GPa at 1 000 ℃ using a high pressure sintering method. The sintered bulk is uniform and the relative density is above 97%. We annealed the ceramic samples in oxygen to eliminate the oxygen vacancies caused by high pressure. After anneal, several broadened peaks were observed through dielectric measurements. However, these peaks are very different from those of coarser-grained ceramics. The observation of polarization hysteresis loop provides the solid evidence of ferroelectricity in these nano-sized BaTiO₃ ceramics. It is believed that the absence of 90° domains and the existence of depolarization field caused by nonferroelectric grain boundaries contribute to the slim loop.

, authors=Peng-Fei LI^{1, 2}, Chang-Qing JIN², Chang-Jiang XIAO², Li-Qing PAN¹, Xiao-Hui WANG³, authorsList=Peng-Fei LI, Chang-Qing JIN, Chang-Jiang XIAO, Li-Qing PAN, Xiao-Hui WANG, authorCompany=null, correspAuthors=Chang-Qing JIN, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1323704689962910017, articleId=1323704689560256831, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=高压烧结法合成致密纳米BaTiO₃陶瓷结构和铁电性能研究, columnId=0, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

在6 GPa压力、1 000 ℃温度条件下制备了致密的纳米BaTiO₃陶瓷，合成样品的平均晶粒尺寸为50 nm，理论密度在97%以上。通过介电测量，观察到了样品宽化的相变峰，它与粗晶陶瓷的相变峰大不相同。由于90°电畴的减少和退极化场的存在，观察到了细长的电滞回线，它是样品铁电性存在的有力证据，表明钛酸钡陶瓷的临界尺寸在50 nm以下。

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^2.Institute of Physics, Chinese Academy of Science, Beijing 100080, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1323704690633998672, tenantId=1146029695717560320, journalId=1255847867265597444, articleId=1323704689560256831, authorId=1323704690453643596, language=CN, stringName=李鹏飞, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=^1.北京科技大学物理系，北京　100083
^2.中国科学院物理研究所，北京　100080, bio={"content":"

李鹏飞（1982—），男，主要从事纳米钛酸钡陶瓷研究. E-mail：lpf_68@163.com

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李鹏飞（1982—），男，主要从事纳米钛酸钡陶瓷研究. E-mail：lpf_68@163.com

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