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Article Dans Une Revue Physical Review Letters Année : 2002

Microphase separation in Pr0.67Ca0.33MnO3 by small angle neutron scattering

Résumé

We have evidenced by small angle neutron scattering at low temperature the coexistence of ferromagnetism (F) and antiferromagnetism (AF) in Pr0.67Ca0.33MnO3. The results are compared to those obtained in Pr0.80Ca0.20MnO3 and Pr0.63Ca0.37MnO3, which are F and AF respectively. Quantitative analysis shows that the small angle scattering is not due to a mesoscopic mixing but to a nanoscopic electronic and magnetic ''red cabbage'' structure, in which the ferromagnetic phase exists in form of thin layers in the AF matrix (stripes or 2D ''sheets'').

Dates et versions

hal-00117991 , version 1 (03-12-2006)

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Ch. Simon, S. Mercone, N. Guiblin, Christine Martin, A. Brulet, et al.. Microphase separation in Pr0.67Ca0.33MnO3 by small angle neutron scattering. Physical Review Letters, 2002, 89, pp.207202. ⟨hal-00117991⟩
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