[1]
MRS Bull. Vol. 21, No. 7 (1996).
Google Scholar
[2]
R.B. Atkin and R.M. Fulrath: J. Am. Ceram. Soc. Vol. 54 (1971), p.265.
Google Scholar
[3]
D. Hennings and K.H. Härdtl: phys. stat. sol. (a) Vol. 3 (1970) p.465.
Google Scholar
[4]
M.J. Hoffmann et al.: Acta mater. Vol. 49 (2001) p.1301.
Google Scholar
[5]
Y. -J. He, W. -Z. Yu, J. -J. Xiong and L. -T. Li: in Positron Aannihilation, edted by P.C. Jain, R.M. Singru and K.P. Gopinathan (World Scientific, Singapore, 1985) p.687.
Google Scholar
[6]
G.H. Dai et al.: J. Mater. Sci.: Mater. Electron. Vol. 2 (1991) p.164.
Google Scholar
[7]
D.J. Keeble et al.: Appl. Phys. Lett. Vol. 73 (1998) p.318.
Google Scholar
[8]
V.J. Gosh, B. Nielsen, T. Friessnegg: Phys. Rev. B Vol. 61 (2000), p.207.
Google Scholar
[9]
M. Hammer: PH.D. Thesis, University of Karlsruhe, Germany (1996).
Google Scholar
[10]
P. Hautojärvi: Positrons in Solids (Springer, Berlin, 1979).
Google Scholar
[11]
M.J. Puska, C. Corbel and R.M. Nieminen: Phys. Rev. B Vol. 34 (1990), p.9980.
Google Scholar
[12]
W. Puff et al.: Mater. Sci. Forum Vol. 255-257 (1997), p.342.
Google Scholar