TITLE

Magnetic nanodot arrays produced by direct laser interference lithography

AUTHOR(S)
Zheng, M.; Yu, M.; Liu, Y.; Skomski, R.; Liou, S. H.; Sellmyer, D. J.; Petryakov, V. N.; Verevkin, Yu. K.; Polushkin, N. I.; Salashchenko, N. N.
PUB. DATE
October 2001
SOURCE
Applied Physics Letters;10/15/2001, Vol. 79 Issue 16, p2606
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Periodic magnetic nanodot arrays have been produced on an area as large as 1 cm×1 cm by direct nanolithography using interferometric laser radiation. The dots are formed by the local annealing of sputtered amorphous Co–C films in regions where the laser intensity is highest. At room temperature the dots exhibit ferromagnetic order and are embedded in a paramagnetic matrix. The onset of room-temperature ferromagnetism is caused by nanoscale chemical and morphological changes during dot formation and reflects the phase separation of magnetic Co-rich clusters. The present single-step nanolithography is potentially an efficient method for fabrication of patterned magnetic arrays. © 2001 American Institute of Physics.
ACCESSION #
5319200

 

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