| Original Articles |
|
|
|
|
Effects of Rapid Recurrent Thermal Annealing on Giant Magnetoresistance NiFe/Ag Multilayers |
| WEN Qi-Ye;ZHANG Huai-Wu;JIANG Xiang-Dong;TANG Xiao-Li;ZHANG Wan-Li |
| School of Micro-Electronic and Solid-electronic, University
of Electronic Science and Technology of China, Chengdu 610054 |
|
| Cite this article: |
|
WEN Qi-Ye, ZHANG Huai-Wu, JIANG Xiang-Dong et al 2003 Chin. Phys. Lett. 20 2242-2245 |
|
|
|
Abstract NiFe/Ag multilayers were prepared by dc sputtering onto glass-ceramic substrates directly at room temperature. The samples were thermally processed by rapid recurrent thermal anneal (RRTA). We studied the effects of RRTA on giant magnetoresistance (GMR) NiFe/Ag multilayer by controlling the anneal temperature as well as the rapid anneal cycle. The samples after three RRTA cycles have a similar annealing temperature dependence of GMR responses to the ordinary annealed samples. With the increasing anneal cycle, the GMR response improved at first and then reached an unexpected high value of 9% before descent rapidly. Microstructure study shows that this effect is ascribed to the transformation of continuous NiFe layer into discontinuous one, and then into a granular like film in a step-by-step way.
|
| Keywords:
75.70.Pa
75.60.Nt
75.70.Cn
|
|
|
Published: 01 December 2003
|
|
| PACS: |
75.70.Pa
|
|
| |
75.60.Nt
|
(Magnetic annealing and temperature-hysteresis effects)
|
| |
75.70.Cn
|
(Magnetic properties of interfaces (multilayers, superlattices, heterostructures))
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
