Phys. Rev. Lett. 82, 2191–2194 (1999)Structural Instability of the Charge Ordered Compound Nd0.5Sr0.5MnO3 under a Magnetic FieldReceived 3 November 1998; published in the issue dated 8 March 1999 We report an anomalous magnetostriction behavior of the charge ordered compound Nd0.5Sr0.5MnO3. We have found that the applied magnetic field not only gives rise to a large negative magnetoresistance but also produces a huge positive magnetovolume effect. This unusual effect is explained considering that the applied magnetic field induces a structural transition at which the volume drastically increases. This effect is also seen in the anisotropic magnetostriction which shows clear anomalies at the field induced transition. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.2191
DOI:
10.1103/PhysRevLett.82.2191
PACS:
75.80.+q, 72.15.Gd, 75.70.Pa
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