EPR Studies of VO^<2+> in Single Crystals of BaCl_2・2H_2O and BaBr_2・2H_2O
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概要
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The EPR on single crystals of BaCl_2・2H_2O and BaBr_2・2H_2O doped with vanadyl ions are studied in the temperature range 30℃ to -196℃. At spectrum at room temperature the hyperfine structure of vanadium is observed. The spectrum at room temperature is isotropic and shows that vanadyl is tumbling in the lattice. The spectrum at low temperature s is also angular independent and the characteristics show that the motions of vanadyl are hindered. The spectra are analysed using a spin-Hamiltonian corresponding to tetragonal symmetry. The dependence of the linewidth on the nuclear-spin quantum number is studied and the linewidths at room temperature are found to obey the relation 1/T_2π√<3>(a_1+a_2m_I+a_3m^2_I). The linewidth is found to increase at low temperature which is due to the increase in the correlation time.
- 社団法人日本物理学会の論文
- 1976-11-15
著者
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Radhakrishna S.
Department Of Physics Indian Institute Of Technology
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Viswanath A.
Department Of Physics Indian Institute Of Technology
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CHOWDARI B.
Department of Physics, Indian Institute of Technology
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Chowdari B.
Department Of Physics Indian Institute Of Technology
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Chowdari B.V.R.
Department of Physics, Indian Institute of Technology
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Kasi Viswanath
Department of Physics, Indian Institute of Technology
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