Details

Autor(en) / Beteiligte

• Yang, C.P.
• Chen, S.S.
• Guo, D.H.
• Wang, H.
• Rao, G.H.
• Morchshakov, V.
• Bärner, K.

Titel

Electrical-field-induced order transitions in Sr-doped manganite perovskites

Ist Teil von

• Journal of alloys and compounds, 2009-01, Vol.467 (1), p.54-60

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2009

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Spin-dependent varistor-like electrical transport was observed in Sr-doped Nd 2/3Sr 1/3MnO 3− δ perovskites for δ > 0.05, in which magnetic grain or phase boundaries is likely to be responsible. In addition to the varistor-like phenomena below a characteristic temperature, we also present evidence for electrical-field-induced magnetic order–order precursor transition at even lower temperature in regions close to highly insulating boundaries where larger electrical fields can be placed. This electrical-field-induced metamagnetic transition was understood by the competition among double exchange, superexchange interactions and external electrical or magnetic field.