Science is what we understand well enough to explain to a computer. Art is everything else we do.

Donald Knuth

Emeritus Faculty

Fred J. Cadieu, Professor

Experimental Solid State Magnetics

(718) 997-3364, SB B202
University of Chicago, B. S., M. S., Ph. D. Physics, 1965, 1966, 1970
Most of his research interests have been involved in one way or the other with the synthesis of magnetic films and magnetic memory structures. Initially this involved the development of special sputtering methods for the synthesis of superconducting films, which are a special type of magnetic material. More recently this evolved into the synthesis of films of rare earth transition metal permanent magnet systems. These studies have involved the synthesis of new iron based permanent magnet materials, as well as films made for applications. Research results have included basic studies of textured film growth for forming oriented magnetic films, several new hard magnet phases, and new device applications utilizing magnetic films. The principal methods used to form films has been sputtering and pulsed laser deposition. In sputtering, gas ions accelerated from the edge of a low pressure gas discharge bombard a target to knock atoms off the target surface. In pulsed laser deposition a high energy laser beam is used to eject atoms from a target. The ejected atoms are then collected onto a surface to form new phases and crystal structures that were not present in the original targets.

F.J. Cadieu, "Permanent Magnet Films for Applications, Chapter 1 Magnetic Film", Devices volume of the Handbook on Thin Film Devices Technology and Applications, editors: J. Douglas Adam and Maurice H. Francombe, Academic Press, Inc., 2000.

F. J. Cadieu, Li Chen, Biao Li, and T. Theodoropoulos, "Room Temperature La0.7Sr0.3MnO3", Appl. Phys. Letters 75, 3369 (1999).

Li Chen, Biao Li, C. F. Cadieu, T. Theodoropoulos, and F. J. Cadieu, "Nanophase Dispersed SmCo Films with High Remanence and Corrosion Resistance", J. Appl. Phys. 87, 6128 (2000).

M. Levy, R. M. Osgood, Jr., H. Hegde, F. J. Cadieu, R. Wolfe, and V. J. Fratello, "Integrated Optical Isolators With Sputter-Deposited Thin-Film Magnets", Photonics Technology Letters 8, 903 (1996).

F.J. Cadieu, "Permanent Magnet Thin Films" in Physics of Thin Films, Vol. 16, Academic Press, San Diego, 1992.

F.J. Cadieu, H. Hegde, A. Navarathna, R. Rani, and K. Chen, "High Energy Product ThMn12 Sm-Fe-T and Sm-Fe Permanent Magnets Synthesized As Oriented Sputtered Films", Appl. Phys. Letters 59, 875 (1991).

A. Navarathna, H. Hegde, R. Rani, K. Chen, and F.J. Cadieu, "The Magnetic Properties of Oriented High Anisotropy Nd(Fe,Co,Mo)12Nx Samples", IEEE Trans. on Magnetics 29, 2812 (1993).

F. J. Cadieu, "Recent Advances In Pseudobinary Iron Based Permanent Magnets", International Materials Reviews 40, 137 (1995)