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发明公开
CN102211927A 一种具有巨介电常数和高饱和磁化强度的磁电复合材料及其制备方法 无效 - 驳回

  • 专利标题： 一种具有巨介电常数和高饱和磁化强度的磁电复合材料及其制备方法
  • 专利标题（英）： Magnetoelectric compound material with giant dielectric constant and high saturation magnetization intensity and preparation method thereof
  • 申请号： CN201110062846.4
    申请日： 2011-03-16
  • 公开(公告)号： CN102211927A
    公开(公告)日： 2011-10-12
  • 发明人: 杨海波 , 林营 , 王芬 , 朱建锋
  • 申请人： 陕西科技大学
  • 申请人地址： 陕西省西安市未央区大学园
  • 专利权人： 陕西科技大学
  • 当前专利权人： 陕西科技大学
  • 当前专利权人地址： 陕西省西安市未央区大学园
  • 代理机构： 西安通大专利代理有限责任公司
  • 代理商 陆万寿
  • 主分类号： C04B35/26
  • IPC分类号： C04B35/26 ;  C04B35/622
一种具有巨介电常数和高饱和磁化强度的磁电复合材料及其制备方法
摘要：
一种具有巨介电常数和高饱和磁化强度的磁电复合材料及其制备方法，按化学通式CoFe2O4将Co3O4和Fe2O3配制后球磨、烘干、预烧得CoFe2O4粉体；按化学通式Ba0.6Sr0.4TiO3将BaCO3，SrCO3和TiO2配制后球磨、烘干、预烧得Ba0.6Sr0.4TiO3粉体；按CoFe2O4和Ba0.6Sr0.4TiO3粉体为0.6-0.9∶0.4-0.1质量比混合均匀得混合物；向混合物中加入PVA粘合剂造粒，得复合材料的混合粉末；将复合材料的混合粉末按需要压制成型，升温排粘合剂后烧结得具有巨介电常数和高饱和磁化强度的磁电复合材料。本发明所制备的磁电复合材料的介电常数高达4120～24700(100Hz)，饱和磁化强度为39～60emu/g。
摘要（英）：

The invention discloses a magnetoelectric compound material with a giant dielectric constant and high saturation magnetization intensity and a preparation method thereof. The preparation method comprises the following steps of: preparing Co3O4 and Fe2O3 according to a chemical general formula of CoFe2O4, performing ball milling, drying and pre-burning to obtain CoFe2O4 powder; preparing BaCO3, SrCO3 and TiO2 according a chemical general formula of Ba0.6Sr0.4TiO3, performing ball milling, drying and pre-burning to obtain Ba0.6Sr0.4TiO3 powder; uniformly mixing the CoFe2O4 with the Ba0.6Sr0.4TiO3 in the mass ratio of (0.6-0.9):(0.4-0.1) to obtain a mixture; adding a PVA (Polyvinyl Acetate) adhesive into the mixture for pelletizing to obtain mixed powder of the compound material; performing press forming on the mixed powder of the compound material as required, raising the temperature to remove the adhesive and sintering to obtain the magnetoelectric compound material with the giant dielectric constant and high saturation magnetization intensity. The dielectric constant of the magnetoelectric compound material prepared with the method is high up to 4,120-24,700 (100Hz), and the saturation magnetization intensity is 39-60 emu/g.

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