title: [Investigation on absorption edge and Ep, Eg of tetragonal crystal system SBN].
abstract: In this paper, the station of the absorption edge of Sr0.63 Ba0.37 Nb2O6 single Crystal is measured with experimental studies. The absorption coefficient is calculated with transimitting curve. The absorption edge below 3.5eV is attributable to indirect transition by studing the alpha1/2-hv curve. The phonon energy Ep and the energy gap Eg are ascertained.
authors.affiliation: Department of Physics, Hubei University, 430062 Wuhan.
authors.forename: Y
authors.initials: Y
authors.lastname: Cheng
authors.forename: W
authors.initials: W
authors.lastname: Cao