DocumentCode :
2942369
Title :
Pulsed Laser Deposited Barium Ferrite Films with Low Ferromagnetic Resonance Linewidths - Plume Position as a Global Property Control Parameter
Author :
Das, J. ; Griffin, B. ; Patton, C.E.
Author_Institution :
Colorado State Univ., Fort Collins
fYear :
2006
fDate :
8-12 May 2006
Firstpage :
513
Lastpage :
513
Abstract :
High anisotropy low loss hexagonal M-type barium ferrite (BaM) thin film materials are promising candidates for use in MMIC devices such as circulators and isolators. The films are prepared by standard PLD and post-deposition annealing techniques. While progress has been made in the PLD growth of such films, there is a wide variance in ferromagnetic resonance (FMR) linewidths and film quality in general. The purpose of this work is to extend the existing map to include new data on the FMR linewidth as a function of oxygen partial pressure, target-substrate distance, laser energy, the lateral substrate-plume displacement, and post-deposition annealing temperature. It is found that the effects of these parameters on the linewidth are interrelated. The 60 GHz FMR peak-to-peak derivative linewidth ranged from 21 to 1000 Oe. This result suggests that small plume sizes will compromise the loss properties of large area films substantially, and that large laser beam areas and larger plumes will be needed for such films.
Keywords :
annealing; barium compounds; crystal structure; ferrites; ferromagnetic resonance; magnetic anisotropy; magnetic hysteresis; magnetic thin films; pulsed laser deposition; spectral line breadth; BaFe12O19; FMR linewidths; MMIC devices; PLD; circulators; ferromagnetic resonance linewidths; frequency 60 GHz; high anisotropy hexagonal M-type barium ferrite thin film; hysteresis loop; isolators; laser energy; lateral substrate-plume displacement; oxygen partial pressure; post-deposition annealing; pulsed laser deposition; Anisotropic magnetoresistance; Annealing; Barium; Ferrite films; Magnetic resonance; Optical control; Optical materials; Optical pulses; Pulsed laser deposition; Thin film devices;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
Type :
conf
DOI :
10.1109/INTMAG.2006.376237
Filename :
4261946
Link To Document :
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