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Crystal Structure and Low Temperature Magnetic Properties of Melt - Spun Sm₂Co7B₃ Compound
양충진(C.J.Yang),최승덕(W.Y.Lee),이우영(S.D.Choi) 한국자기학회 1993 韓國磁氣學會誌 Vol.3 No.4
Low temperature magnetic properties and crystal structures of melt-spun Sm₂Co_7B₃ compound were characterized. The magnetic measurements in the temperature range 77 K~450 K indicated that a spin-reorientation took place at about 150~160 K. A large anisotropy was observed(Ha = 135 kOe at 300 K, 725 kOe at 77 K) for Sm2Co7B3 although the magnetic moment is rather low. The crystal structure of the Sm₂Co_7B₃ compound was analyzed in detail by Rietveld analysis of powder diffraction pattern, and it was revealed that B(4h) atoms are not placed in the Sm(2e) layer but in between the Sm(2e) and Co(6i₁) layers.