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|Title: ||Correlating Uncompensated Antiferromagnetic Moments and Exchange Coupling Interactions in Interface Ion-Beam Bombarded Co90Fe10/CoFe-Oxide Bilayers|
|Authors: ||Shueh, C|
van Lierop, J
|Keywords: ||Ion Beams|
|Issue Date: ||1-Nov-2012|
|Publisher: ||IOP Publishing LTD|
|Citation: ||Shueh, C., Chen, P. S., Cortie, D., Klose, F., Chen, W. C., Wu, T. H., van Lierop, J., & Lin, K. W. (2012). Correlating Uncompensated Antiferromagnetic Moments and Exchange Coupling Interactions in Interface Ion-Beam Bombarded Co90Fe10/CoFe-Oxide Bilayers [Special Issue]. Japanese Journal of Applied Physics, 51(11, part 2), Article Number 11PG02.|
|Abstract: ||The coercivity and exchange bias field of ferro-/antiferromagnetic Co(90)Fe(10)/CoFe-oxide bilayers were studied as function of the surface morphology of the bottom CoFe-oxide layer. The CoFe-oxide surface structure was varied systematically by low energy (0-70 V) Argon ion-beam bombardment before subsequent deposition of the Co(90)Fe(10) layer. Transmission electron microscopy results showed that the bilayer consisted of hcp Co(90)Fe(10) and rock-salt CoFe-oxide. At low temperatures, enhanced coercivities and exchange bias fields with increasing ion-beam bombardment energy were observed, which are attributed to defects and uncompensated moments created near the CoFe-oxide surface in increasing amounts with larger ion-beam bombardment energies. Magnetometry results also showed an increasing divergence of the low field temperature dependent magnetization [Delta M(T)] between field-cooling and zero-field-cooling processes, and an increasing blocking temperature with increasing ion-beam bombardment energy. © 2012 IOP Publishing LTD.|
|Appears in Collections:||Journal Articles|
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