H.J. Blythe, R.M. Ibrahim
High-purity commercial ZnO and MnO2 powders have been utilized as starting materials to produce the compound Zn0:98Mn 0:02O. The objective of this study was to investigate the magnetic properties of these materials while focusing on the effect of mechanical alloying on inducing ferromagnetism. The methodology involved mechanically alloying the powder mixture corresponding to Zn0:98Mn 0:02O for durations of up to 15 hours. Results indicated that grinding the powders resulted in the generation of a ferromagnetic component that displayed hysteresis at room temperature. The coercivity of this component was measured to be approximately 110/C610 Oe at 290K, saturating in a field of about 6kOe. Additionally, the magnetic moment per Mn atom was estimated to be about 0.1 mB. Upon low-temperature annealing, a slight increase in saturation magnetization was observed. However, after annealing at 700/C14C, ferromagnetism was found to decay, revealing a net paramagnetic behavior at room temperature. Subsequent annealing at higher temperatures resulted in the observation of several low-temperature peaks attributed to the thermal decay of MnO2 and its interaction with ZnO.
@article{9dbc5e93-36da-4a3f-bea3-f8175338f392,
title={Mechanical alloying: a route to room-temperature Ferromagnetism in bulk Zn1/C0xMn xO},
author={H.J. Blythe and R.M. Ibrahim},
year={2004},
language={en}
}TY - JOUR TI - Mechanical alloying: a route to room-temperature Ferromagnetism in bulk Zn1/C0xMn xO AU - H.J. Blythe AU - R.M. Ibrahim PY - 2004 LA - en ER -
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