欢迎登录材料期刊网

材料期刊网

高级检索

采用化学共沉淀法和热处理的方法制备了La1-xCaxMnO3(x=0.3,0.4,0.5)系钙钛矿型氧化物(LCMO),经XRD确定样品为钙钛矿型结构.TEM分析表明样品直径约为40nm的枝节状纳米丝,用△Tad-T测量仪测量了△Tad-T.与块状样品相比居里温度的波峰变宽,绝热磁温变降低.

参考文献

[1] AhnKH;Wuxw;Liuk et al.Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe[J].Physical Review,1996,54(21):15299-15302.
[2] Guo ZB;Du YW;Zhu JS;Huang H;Ding WP;Feng D .Large magnetic entropy change in perovskite-type manganese oxides[J].Physical review letters,1997(6):1142-1145.
[3] ZHONG W;Du Y W;Chen W et al.Structure composition and magnetocaloric properties in polycrystalline La1-xAxMnO3(A=NaK)[J].the European Physical Journal B,1998,3(02):169-174.
[4] Jingbing Liu;Hao Wang;MangKang Zhu;Bo Wang;Hui Yan .Synthesis of La_(0.5)A_(0.5)MnO_3 (A = Sr, Ba) by a hydrothermal method at low temperature[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2003(5):817-822.
[5] 黄焦宏,王正德,金培育,刘金荣,张泽玉,王贵,杨保荣,成永顺,邱巨峰,徐来自.Gd5(SixGe1-x)4合金磁热效应的直接测量[J].包头钢铁学院学报,2000(03):212-214.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%