Title :
Influence of ion dosage on exchange field and GMR of irradiated PtMn-based spin valves
Author :
Chih-Huang Lai ; Yang, C.H.
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Taiwan
Abstract :
Summary form only given. Ion irradiation has been used to manipulate the exchange field in the FeMn/NiFe system. Depending on the dosage and energy, the exchange field can be either enhanced due to defects acting as pinning sites or be suppressed to zero due to atomic intermixing. We recently reported that irradiated C ions in as-deposited NiMn films may result in modification of the phase transformation during the post-annealing process. In this article, the effects of the C ion dosage are investigated on phase transformation of PtMn and on GMR of PtMn-based spin valves.
Keywords :
antiferromagnetic materials; crystal defects; exchange interactions (electron); giant magnetoresistance; interface magnetism; ion beam effects; ion beam mixing; manganese alloys; platinum alloys; solid-state phase transformations; spin valves; C; GMR; PtMn; atomic intermixing; exchange field; ion dosage; ion irradiation; irradiated C ions; irradiated PtMn-based spin valves; phase transformation; pinning sites; post-annealing; Acceleration; Annealing; Antiferromagnetic materials; Corrosion; Magnetic materials; Materials science and technology; Power engineering and energy; Rapid thermal processing; Spin valves; Temperature;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001237
