Bae, S.
, Judy, J.
, Chen, P.
, Egelhoff Jr., W.
and Zum, S.
(2001),
High Thermal Stability of Exchange-Biased Bilayers and Bottom Giant Magnetoresistive Spin Valves Using an α-Fe<sub>2</sub>O<sub>3</sub> Antiferromagnetic Layer, Applied Physics Letters
(Accessed October 14, 2025)
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High Thermal Stability of Exchange-Biased Bilayers and Bottom Giant Magnetoresistive Spin Valves Using an α-Fe2O3 Antiferromagnetic Layer
Published
Author(s)
S Bae, J H. Judy, P J. Chen, , S Zum
Abstract
The thermal stability of antiferromagnetic a-Fe2O3 exchange-biased bilayers and bottom giant magnetoresistive (GMR) spin-valve has been investigated experimentally at various ambient temperatures. An a-Fe2O3 exchange biased bilayer exhibited a high blocking temperature, Tb, of 390 degree C, and a bottom spin-valve possessed stable GMR performance above 350 degree C. The Tb of a-Fe2O3 exchange biased bilayers depended strongly on the adjacent ferromagnetic material and the number of measurements. In addition, increasing mean grain size and enhancing (104) and (110) cyrstalline texture of a-Fe2O3 increased Tb by up to 23%.Citation
Applied Physics Letters
Volume
78
Issue
No. 26
Pub Type
Journals
Keywords
giant, iron oxide, magnetoresistance, stability, thermal
Citation
Issues
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Created May 31, 2001, Updated October 12, 2021