@inproceedings{d11cea28178045788c683d9fa1715d1f,
title = "Co72Fe20B8 : structure, magnetism, and tunneling spin polarization",
abstract = "We present measurements of tunneling spin polarization of Co72Fe20B8 in Al/AlOx/CoFeB tunnel junctions using superconducting tunneling spectroscopy. We consistently observe high spin polarization (above 53%), higher than that measured for comparable CoFe alloys, indicating a crucial role played by the 8% atomic boron. X-ray diffraction measurements on 700 {\AA} thick films reveal an amorphous structure for as-deposited films, while anneals above 250¿°C initiate a gradual crystallization. Superconducting quantum interference device magnetometery shows that the magnetic moment exhibits minor changes after anneals, but there is a dramatic change in the coercivity after anneals above 400¿°C. However, these structural and magnetic changes induce only a slight change in the tunneling spin polarization of CoFeB.",
author = "P.V. Paluskar and J.T. Kohlhepp and H.J.M. Swagten and B. Koopmans",
year = "2005",
doi = "10.1063/1.2163328",
language = "English",
series = "Journal of Applied Physics",
pages = "08E503--1/3",
booktitle = "Proceedings of the 50th Annual Conference on Magnetism & Magnetic Materials, 30 October - 3 November 2005, San Jos{\'e}, California, USA",
}