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Pr0.5Sr0.5-xBaxMnO3: Size and Mismatch Effects on Structural and Magnetic Transitions.

✍ Scribed by C. Autret; C. Martin; M. Hervieu; A. Maignan; B. Raveau; G. Andre; F. Bouree; Z. Jirak

Publisher
John Wiley and Sons
Year
2003
Weight
73 KB
Volume
34
Category
Article
ISSN
0931-7597

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✦ Synopsis

Magnetic properties

Magnetic properties D 9000

Pr 0.5 Sr 0.5-x Ba x MnO 3 : Size and Mismatch Effects on Structural and Magnetic Transitions. -The structural and magnetic transitions in the title series are monitored by neutron diffraction and HREM in connection with the transport and magnetic properties. A new structural and magnetic phase diagram is proposed. All the compounds are in the paramagnetic state at room temperature and the structure evolves from Pnma to Imma and then I4/mcm by increasing the average A-site cation size. For the larger A-site cations, an original magnetic phase separation between A-type antiferromagnetism and ferromagnetism is evidenced. -(AUTRET, C.;

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## Abstract The title compounds are prepared by the standard solid state reaction method at 1000 Β°C in air (60 h) followed by sintering at 1100 Β°C in air (60 h).