期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
AgNO3对多晶材料La0.6Sr0.05Na0.35MnO3结构和磁性的影响
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1. 唐山学院基础教学部, 河北 唐山 063000;
2. 河北联合大学理学院, 河北 唐山 063000;
3. 河北师范大学物理科学与信息工程学院, 河北 石家庄 050024 -
DOI：
Structure and Magnetic Influence of AgNO3 on the Crystal Bulk Material La0.6Sr0.05Na0.35MnO3
摘要/Abstract
采用溶胶-凝胶法制备了多晶La0.6Sr0.05Na0.35MnO3粉体样品,用固相反应法制备了La0.6Sr0.05Na0.35MnO3+xAgNO3(x=0.08,0.16)的粉体样品,块体于1 673K烧结得到.结果在样品中发现了Ag和Mn3O4相,对母体样品的晶格常数和晶胞体积都有微小影响;样品的居里温度随掺杂AgNO3含量的增加而增加;在1.8T磁场下La0.6Sr0.05Na0.35MnO3+0.16AgNO3的块体材料在283K出现磁电阻峰值,为27%;La0.6Sr0.05Na0.35MnO3+0.08AgNO3块体也在283K左右出现峰值,为32%,在210～260K时磁电阻随温度变化不大.
La0.6Sr0.05Na0.35MnO3 polycrystalline sample was synthesized by sol-gel method.The La0.6Sr0.05Na0.35MnO3 +xAgNO3(x=0.08,0.16) was prepared by conventional solid state reaction method and the palletized samples were heated at 1 673K.Ag and Mn3O4were found in the samples,and thus they had a minor impact on the lattice constant of the parent sample and the cell volume;Curie temperature increased with the doping of AgNO3content increases;Under an applid filed of 1.8T,there is a MR maximum 27% of La0.6Sr0.05Na0.35MnO3+0.16AgNO3 at 283K;and a MR maximum 32% of La0.6Sr0.05Na0.35MnO3+0.08AgNO3 at 283K.At 210～260K,there is little change in magnetoresistance of these two samples.So temperature stability of magnetoresistance is improved,which supplies a new method to improve magnetoresistance and temperature stability of magnetoresistance.