Superconductivity, magnetic fluctuations, and magnetic order in TbSr2Cu2.69Mo0.31O7

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題名:	Superconductivity, magnetic fluctuations, and magnetic order in TbSr2Cu2.69Mo0.31O7
作者:	Li,WH;Chuang,WY;Wu,SY;Lee,KC;Lynn,JW;Tsay,HL;Yang,HD
貢獻者:	物理研究所
關鍵詞:	AC-SUSCEPTIBILITY;NEUTRON-SCATTERING;TB;YBA2CU3O7-DELTA;PB2SR2TBCU3O8;DEPENDENCE;FIELD;GD;PR
日期:	1997
上傳時間:	2010-07-08 14:06:52 (UTC+8)
出版者:	中央大學
摘要:	Neutron-diffract ion and ac-susceptibility measurements have been performed to study the superconductivity and magnetic order of the Tb spins in polycrystalline TbSr2Cu2.69Mo0.31O7. Superconductivity with an onset temperature at 37 K was observed in the de electrical resistivity and ac-magnetic-susceptibility measurements. A two-step transition to the super-conducting state was seen, as both intragranular and Josephson-like intergranular losses were evident in the out-of phase component of the ac susceptibility. Magnetic correlations between the To spins start developing around 40 K, and the correlation length diverges at T-N-5.4 K with the nearest-neighbor Tb spins aligned antiparallel along all three crystallographic directions. Below 5.4 K, superconductivity and Tb magnetic order coexist.
關聯:	PHYSICAL REVIEW B
顯示於類別:	[物理研究所] 期刊論文

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