Pulsed Laser Deposition of Magnetic Multilayers for the Grant Entitled Laser Processing of Advanced Magnetic Materials.

Sorescu, M.

Technical Information Center Oak Ridge Tennessee

关键词: Pulsed laser deposition;    Multilayer structures;    Magnetic materials;    Heat treatment;    Magnetite;   

RP-ID  :  DE2004822368

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports 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 degrees 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 degrees 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.