A naturally induced hole center in the mineral hypersthene |
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| Authors: | A B Vassilikou-Dova K Eftaxias |
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| Institution: | 1. Physics Department, Athens University, Panepistimiopolis, 15784, Zografos, Greece
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| Abstract: | In natural hypersthene a paramagnetic center in triclinic site symmetry was detected by electron paramagnetic resonance with the following spin. Hamiltonian parameters:g xx=2.0104,g yy=2.0256,g zz=2.0090. This center is most likely formed as a hole on an oxygen of the SiO4 unit. No hyperfine splitting was detected at room temperature. The EPR signal disappears after heating the crystal at 773 K for 1 h although the colour does not bleach. |
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