Optical and Electron Paramagnetic Resonance Studies of Atomic Manganese Centersin NaCl
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概要
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EPR and optical absorption spectra of Mn° centers in NaCl are studied. Three kinds of optical absorption spectra A, B and C which are ascribed to atomic manganese centers are found: each of these spectra consists of the allowed transitions from the ground state 3d^54_<s^2> to the excited states 3d^54_s4_p and 3d^54_s5_p. Each spectrum has a structure: the splitting for the spectrum A is much smaller than those for the spectra B and C. The spectrum A which is formed by the X-irradiation at liquid helium temperature changes above 20°K into spectrum B. It is suggested that the spectrum A and the spectrum B arise from Mn° at a lattice site (-A center) and in an offcentered position (Mn°-B center), respectively. It is shown that the spectrum C is associated with the Mn° center which produces EPR spectrum with A=15.5×10^<-4>cm^<-1>. It is suggested that the spectrum C is associated with Mn°at the interstitial site (Mn°-C center).
- 社団法人日本物理学会の論文
- 1970-11-05
著者
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Ikeya Motoji
Department Of Earth And Space Science Faculty Of Science Osaka University
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Itoh Noriaki
Department Of Crystalline Material Science Faculty Of Engineering Nagoya University
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