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Structural and Magnetic Characterization of La2NiRhO6

✍ Scribed by P.D. Battle; J.F. Vente

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
184 KB
Volume
146
Category
Article
ISSN
0022-4596

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✦ Synopsis

A polycrystalline sample of the perovskite La 2 NiRhO 6 has been prepared. Neutron di4raction shows the compound to be orthorhombic (space group Pbnm; a‫,)4(0535.5؍‬ b‫,)4(9255.5؍‬ and c‫)5(5038.7؍‬ A s at 5 K) with a disordered arrangement of Ni and Rh over the six-coordinate B sites. Consideration of the B+O bond lengths and the paramagnetic Curie constant suggests that the Ni and Rh cations are trivalent and low spin. Magnetization and neutron di4raction experiments show that a transition to a spin-glass phase occurs upon cooling below 12 K.

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