Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
83 (1998), S. 7664-7667
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Colossal magnetoresistance has been observed in polycrystalline Gd0.5Sr0.5MnO3 perovskite. Irreversibility and sharp anomalies in the magnetostriction, magnetization, and magnetoresistance isotherms take place at low temperatures (〈90 K), which have been attributed to the establishment of a charge-ordered state (CO). For temperatures lower than (approximate)42 K, the CO state coexists with a cluster-glass state, as deduced from the magnetic and specific heat behavior and neutron scattering experiments. The linear-thermal-expansion measurements show an abrupt drop for T(approximate)TCO when a sufficiently high magnetic field is applied. The appearance of this anomaly has been attributed to the partial delocalization of the carriers by the field. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.367886
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