Crystal Structure and Magnetic Properties of Bi0.267Pr0.733SrO3-delta via Neutron Diffraction

Author： Wolcyrz M.   Horyn R.   Andre G.   Bouree F.  

Publisher： Academic Press

ISSN： 0022-4596

Source： Journal of Solid State Chemistry, Vol.132, Iss.1, 1997-08, pp. : 182-187

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Abstract

The crystal structure of Bi0.267Pr0.733SrO2.963 has been refined based on neutron powder diffraction data (monoclinic system, P121/n1 space group, a=5.9728(2) A, b=6.1143(2) A, c=8.5308(3) A, beta=89.92(1)#° at T=300 K). A nonhomogeneous occupation of atomic positions has been obtained. Down to T=1.4 K, no magnetic ordering has been observed on Bi0.267Pr0.733SrO2.963 neutron powder diffraction diagrams. This result is consistent with the AC-susceptibility vs T curve, which shows paramagnetic behavior down to 4.2 K.

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