Fabrication and properties of FePt thick films for alternative local field micromagnet

Fabrication and properties of FePt thick films for alternative local field micromagnet

Growth of FePt films thicker than several tens of a micrometer was attempted on Fe substrates for the use of micromagnets. Several underlayer or intermediate layers were found to be totally ineffective to success. However, 20   μ m thick FePt films on the Fe substrates were successfully grown by spu...

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Veröffentlicht in:Journal of applied physics 2009-04, Vol.105 (7), p.07A744-07A744-3
Hauptverfasser: Jang, Pyungwoo, Lee, Bonghan, Seomoon, Kyu, Rhie, Kungwon, Choi, Sungwon
Format: Artikel
Sprache:eng
Schlagworte:
ADHESION
ANISOTROPY
ANNEALING
BINARY ALLOY SYSTEMS
CRYSTAL GROWTH
DEPOSITION
IRON ALLOYS
LAYERS
MATERIALS SCIENCE
PLATINUM ALLOYS
ROUGHNESS
SCANNING ELECTRON MICROSCOPY
SPUTTERING
SUBSTRATES
SURFACE CLEANING
SURFACE TREATMENTS
THIN FILMS
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Beschreibung
Zusammenfassung:Growth of FePt films thicker than several tens of a micrometer was attempted on Fe substrates for the use of micromagnets. Several underlayer or intermediate layers were found to be totally ineffective to success. However, 20   μ m thick FePt films on the Fe substrates were successfully grown by sputtering after HF surface treatment. ( B H ) max of the non-annealed film was about 10.7 MGOe under a maximum applied field of 10 kOe. An excellent adhesion between the Fe substrate and the FePt thick films seems to be due to both improvement of surface cleanliness and roughening which enhanced the chemical and physical bonding strengths.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3076055