PULSED LASER DEPOSITION OF MAGNETIC MULTILAYERS FOR THE GRANT ENTITLED LASER PROCESSING OF ADVANCED MAGNETIC MATERIALS

Sorescu, Monica

Duquesne University (United States)

关键词: Heat Treatments;    Physical Vapor Deposition;    Phase Studies;    36 Materials Science;    Thickness;   

DOI  :  10.2172/822368
RP-ID  :  NONE
RP-ID  :  FG26-02NT41595
RP-ID  :  822368

美国|英语

来源: UNT Digital Library

【 摘 要 】

Nanostructured magnetite/T multilayers, with T = Ni, Co, Cr, have been prepared by pulsed laser deposition. The thickness of individual magnetite and metal layers takes values in the range of 5-40 nm with a total multilayer thickness of 100-120 nm. X-ray diffraction has been used to study the phase characteristics as a function of thermal treatment up to 550 C. Small amounts of maghemite and hematite were identified together with prevailing magnetite phase after treatments at different temperatures. The mean grain size of magnetite phase increases with temperature from 12 nm at room temperature to 54 nm at 550 C. The thermal behavior of magnetite in multilayers in comparison with powder magnetite is discussed. These findings were published in peer-reviewed conference proceedings after presentation at an international materials conference.