教師資料查詢 | 類別: 期刊論文 | 教師: 陳憬燕 Chen, Jiing-yann (瀏覽個人網頁)

標題:Magnetic structure of α-FeC2O4‧2D2O
學年75
學期2
出版(發表)日期1987/04/15
作品名稱Magnetic structure of α-FeC2O4‧2D2O
作品名稱(其他語言)
著者Satoru, Simizu; 陳憬燕; Chen, Jiing-yann; Friedberg, S. A.; Martinez, J.; Shirane, G.
單位淡江大學物理學系
出版者American Institute of Physics (AIP)
著錄名稱、卷期、頁數Journal of Applied Physics 61(8), pp.3420-3422
摘要Long‐range spin ordering has been studied in the quasi‐one‐dimensional antiferromagnet α‐FeC2O4⋅2D2O by neutron diffraction on a powdered sample above and below T N =11.7 K. Data at 14 K show essentially the room‐temperature chemical structure. The space group is C2/c, Z=4, and unit cell dimensions are a=11.700 Å, b=5.568 Å, and c=9.847 Å with β=128.05°. Magnetic peaks appear at T N and data at 10.5 K show doubling of the unit cell along the b direction, the chain axis. The ordered structure belongs to the magnetic space group P 2b 2/n with spins parallel to the b axis. Cancellation of certain interchain interactions gives the structure a pronounced two‐dimensional character. At T 2=9.5 K a discontinuous transition to a second magnetic phase occurs with additional doubling of the unit cell in the a direction. Below T 2 the symmetry of the magnetic structure is reduced to triclinic, P 2s 1̄ with the spins deviating slightly from the b axis.
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語言英文
ISSN0021-8979
期刊性質國內
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國別美國
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