T. Hayashi et al., Field-induced orbital order transition of Nd0.45Sr0.55MnO3 observed in high-field magnetization and resistivity, PHYSICA B, 294, 2001, pp. 115-118
Magnetization and magnetoresistance of Nd0.45Sr0.55MnO3 have been measured
in pulsed magnetic fields up to 45 T. Application of high magnetic held cau
ses metamagnetic transitions below the Neel temperature T-N similar to 220
K. Temperature dependence of the resistivity under ferromagnetic state afte
r the transition showed characteristics of a three-dimensional metal. The o
bserved ferromagnetic transition and transport properties in the ferromagne
tic state can be attributed to the collapse of planar orbital ordering by m
agnetic field. (C) 2001 Elsevier Science B.V. All rights reserved.