Transition of magnetic state from A-type antiferromagnetic to ferromagnetic in electron-doped Nd1-xCexMnO3

Shixiong Zhang, M. A.; Lan Luan, M. A.; Shun Tan, M. A.; Yuheng Zhang
April 2004
Applied Physics Letters;4/19/2004, Vol. 84 Issue 16, p3100
Academic Journal
The transition of the magnetic state with x increasing in electron-doped manganite Nd1-xCexMnO3 is investigated through the measurements of magnetism, including the M–T and hysteresis curves. For x=0.04, with temperature increasing, M under zero-field cooling indicates that the magnetic structure changes from ferromagnetic (FM) to antiferromagnetic then to FM again and finally turns to paramagnetic (PM). However, the field-cooling M–T curve shows a negative M at 5 K then increases rapidly to a positive maximum and finally turns to PM. The experiment results are well fitted with Weiss’s molecular field theory and Néel’s ferrimagnetic model. With the enhancement of Ce content (x=0.08 and 0.10), this system gradually exhibits simple transition from FM to PM. © 2004 American Institute of Physics.


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