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Thin Film Fabrication of R2Fe14B Compounds

Published online by Cambridge University Press:  25 February 2011

J. F. Zasadzinski ,
C. U. Segre ,
E. D. Rippert ,
J. Chrzas  and
P. Radusewicz
J. F. Zasadzinski
Affiliation:
Department of Physics, Illinois institute of Technology, Chicago, IL 60616
C. U. Segre
Affiliation:
Department of Physics, Illinois institute of Technology, Chicago, IL 60616
E. D. Rippert
Affiliation:
Department of Physics, Illinois institute of Technology, Chicago, IL 60616
J. Chrzas
Affiliation:
Department of Physics, Illinois institute of Technology, Chicago, IL 60616
P. Radusewicz
Affiliation:
Department of Physics, Illinois institute of Technology, Chicago, IL 60616
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Abstract

Thin Films (≃4000 A) of R2Fe14B compounds have been synthesized by d.c. triode sputtering for R=Nd,Sm and Er. Deposition onto single-crystal substrates heated to 600”C and with rates of 1.3 A/s results in nearly epitaxial film growth such that the c-axis of the tetragonal structure is perpendicular to the film plane. As a consequence, intrinsic anisotropy effects are observed in the magnetic properties of the as-made films. Although sapphire and quartz substrates give the best results, similar directed growth is observed on recrystallized Nb foils. Magneto-optical measurements on the Nd-based compounds give a remnant polar Kerr angle θ=0.22° and coercive field Hc=5.5 k0e. The easy axis is in the film plane for R=Sm and Er and a remnant magnetization greater than 80% of saturation is observed for H applied parallel to the film plane. Electrical resistivity measurements on Nd2Fe14B films indicate that spin-disorder scattering from the rare earth site is important and features from both the Curie and spin reorientation temperatures are observed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 96: Symposium F – High Performance Permanent Magnet Materials , 1987 , 55
Copyright
Copyright © Materials Research Society 1987

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References

REFERENCES

[1] Croat, J.J., Herbst, J.F., Lee, R.W. and Pinkerton, F.E., J. Appl. Phys. 55, 2078 (1984).Google Scholar
[2] Sagawa, H., Fujimura, S., Togawa, N., Yamamoto, H. and Matsura, Y., J. Appl. Phys. 55, 2083 (1984).Google Scholar
[3] Carlisle, B.E., Machine Design, July 1985, p.73.Google Scholar
[4] Stancil, D.D., J. Appl. Phys. 61, 4111 (1987).Google Scholar
[5] Sinnema, S., Radwanski, R.J., Franse, J.J.M., de Mooij, D.B. and Buschow, K.H.J., J. Magn. Magn. Mat. 44, 333 (1984).Google Scholar
[6] Kerr measurements provided by Shin, S.C. of Kodak Research Laboratories, Rochester, NY, using a 632.8 nm He Ne laser.Google Scholar
[7] Zasadzinski, J.F., Segre, C.U. and Rippert, E.D., J. Appl. Phys. 61, 4278 (1987).Google Scholar
[8] Hiroyski, H., Yamauchi, H., Yamaguchi, Y., Yamamoto, H., Nakagawa, Y. and Sagawa, H., Solid State Commun. 54, 41 (1985).Google Scholar
[9] Pinkerton, F.E., J. Magn. Magn. Mat. 54–57, 579 (1986).Google Scholar
[10] Cadieu, F.J., Cheung, T.D., Wickramasekara, L. and Kamprath, N., IEEE Trans. Mag. 22, 752 (1986).Google Scholar
[11] Fuerst, C.D., Meisner, G.P. and Pinkerton, F.E., J. Appl. Phys. 61, 2314 (1987).Google Scholar
[12] Fisk, Z. and Webb, G.W. in Treatise on Materials Science and Technology Vol.21, (Academic, New York, 1981).Google Scholar
[13] White, R.H. and Geballe, T.H., Long Range Order in Solids (Academic, New York, 1979).Google Scholar