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镧钴掺杂锶铁氧体的制备及相变研究

Studies on preparation and phase transition of Sr_1-xLa_xFe_12-xCo_xO₁₉ ferrite

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【Author】 HUANG Kai,LIU Guo-hong,TANG Zhen,SHENG Shouqi,LIU Xian-song(1.Department of Mathematics & Physics,Anhui Institute of Architecture & Industry,Hefei 230022,China;2.School of Physics & Materials Science,Anhui University,Hefei 230039,China)

【机构】安徽建筑工业学院数理系；安徽大学物理与材料科学学院安徽合肥230022；安徽合肥230022；安徽合肥230039；

【摘要】采用陶瓷法制备了单轴M型锶铁氧体Sr1-xLaxFe12-xCoxO19(x=0~0.25).实验结果表明,在温度高于850℃时,样品是单相结构.实验还发现,随着掺杂含量x的增加,晶格常数a基本保持不变,晶格常数c逐渐减小,而且样品的居里温度Tc也逐渐减小.更多还原

【Abstract】 Substituted hexagonal strontium ferrite,Sr1-xLaxFe12-xCoxO19(x=0～0.25) are prepared by ceramic process.The experimental results show the samples are single-phase strontium ferrites when tempreature is beyond 850℃.As x increases,the value of crystal lattice constant a is almost kept unchanged but that of crystal lattice constant c and Curie tempreature Tc decrease monotonously.更多还原