Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Sintering behavior and characterization of Ln0.7Ca0.3MnO3 (Ln=Nd, Sm, La)

Ln0.7Ca0.3MnO3 (Ln=Nd, Sm, La)의 소결 거동 및 특성

  • Chon, Gom-Bai (School of Nano & Advance the Materials Engineering, Changwon National University) ;
  • Koo, Bon-Heun (School of Nano & Advance the Materials Engineering, Changwon National University) ;
  • Lee, Chan-Gyu (School of Nano & Advance the Materials Engineering, Changwon National University)
  • 전검배 (창원대학교 나노.신소재공학부) ;
  • 구본흔 (창원대학교 나노.신소재공학부) ;
  • 이찬규 (창원대학교 나노.신소재공학부)
  • Published : 2006.01.27
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Abstract

Effects of doping rare earth element on Ln site of $Ln_{0.7}Ca_{0.3}MnO_3$ (Ln=Nd, Sm and La) were examined from sintering behavior, structure and magnetic properties. Sintering reactions proceeded rapidly in order of $La_{0.7}Ca_{0.3}MnO_3>Nd_{0.7}Ca_{0.3}MnO_3>Sm_{0.7}Ca_{0.3}MnO_3$. This result can be explained by diffusivity of metal cation. Size of a-axis increased as following order of La$Nd_{0.7}Ca_{0.3}MnO_3$, 93K for $Sm_{0.7}Ca_{0.3}MnO_3$ and 225K for $La_{0.7}Ca_{0.3}MnO_3$ were obtained. This result coincides with change of Mn-O bond length causing by a-axis lattice constant.

Keywords

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