Magnetic transitions in cupric oxide: the effect of oxygen defects
T V Chandrasekhar Rao; V C Sahni; T V Chandrasekhar Rao; Div. of Solid State Phys., Bhabha Atomic Res. Centre, Bombay, India; V C Sahni; Div. of Solid State Phys., Bhabha Atomic Res. Centre, Bombay, India
Журнал:
Journal of Physics: Condensed Matter
Дата:
1994-07-25
Аннотация:
The magnetic moment of high purity CuO powder was measured in the range 5 K-400 K using a SQUID magnetometer. T<sub>N</sub> was determined to be approximately=230 K. A clear cusp is observed in the magnetic moment versus temperature curve at T<sub>N</sub>, in contrast to reports in the literature which merely note a change in the slope of the curve at that temperature. We attribute this feature to the formation of oxygen defects in cupric oxide.
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