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脉冲激光沉积制备La0．62Ca0．2K0．09MnO3外延膜及其磁热性能
  • ISSN号：0251-0790
  • 期刊名称：《高等学校化学学报》
  • 时间：0
  • 分类：O611.3[理学—无机化学;理学—化学]
  • 作者机构：[1]吉林大学无机合成与制备化学国家重点实验室,化学学院,长春130012
  • 相关基金：国家自然科学基金（批准号：90922034,21131002,21201075）和高等学校博士学科点专项科研基金（批准号：20110061130005）资助.
作者： 吴小峰[1], 黄科科[1], 侯长民[1], 葛磊[1], 初学峰[1], 王珊[1], 冯守华[1]
关键词： 磁热效应, 外延膜, 脉冲激光沉积, 锰酸盐, Magnetocaloric effect, Epitaxial film, Pulsed laser deposition, Manganite
中文摘要：

采用脉冲激光沉积法在单晶SrTiO，（STO）基底上制备了La0.62Ca0.29K0.09MnO3（LCKMO）薄膜，通过调控基底温度获得了平整致密的膜层．利用二维面探X射线衍射仪和高分辨透射电子显微镜对薄膜结构进行了表征．结果表明，薄膜呈高质量取向外延生长，对应关系为{001}LCKMO││{001}STO．对薄膜的磁热性能研究表明，5T下最大磁熵变为3．45J／（kg·K），相对制冷效率为379．5J／kg，磁熵半峰宽为110K．

英文摘要：

La0.62Ca0.29K0.09MnO3（LCKMO） film was epitaxially grown on the （001）SrTiO3（STO） single crystal substrate by pulsed laser deposition and a smooth and dense film was obtained by controlling the substrate temperature. The structure was characterized by 2D X-ray area detector and high resolution transmission electron microscopy, and the results indicate a high quality oriented growth of the film with the relationship of { 001 / LCKMO [ I { 001 / STO. At the magnetic field of 5 T, the maximum magnetic entropy change and relative cooling power of the film is 3.45 J/（ kg . K） and 379.5 J/kg, respectively. A notable case is that the full width at half maximum of I ASu I is 110 K, which is desirable for the Ericsson cycle, the excellent magneto caloric effect of the LCKMO film reveals its great applicative potentialities as magnetic cooling refrigerant.

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期刊信息
  • 《高等学校化学学报》
  • 北大核心期刊（2011版）
  • 主管单位:中华人民共和国教育部
  • 主办单位:吉林大学 南开大学
  • 主编：周其凤
  • 地址：吉林大学南胡校区
  • 邮编：130012
  • 邮箱：cjcu@jlu.edu.cn
  • 电话：0431-88499216
  • 国际标准刊号：ISSN：0251-0790
  • 国内统一刊号：ISSN：22-1131/O6
  • 邮发代号:12-40
  • 获奖情况:
  • 首届及第二届国家期刊奖,连续两届“百种中国杰出学术期刊”,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国科学引文索引（扩展库）,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:50676