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Temperature dependence of the EPR spectrum of ruby (1977)

Klein, H. ; Scherz, U. ; Schulz, M. ; [et al.]

Springer

The European physical journal 28 (1977), S. 149-157

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ISSN: 1434-6036

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The small splitting of the4 A 2 ground state of Cr3+ centers in Al2O3 has been measured with an EPR spectrometer in the temperature range from 88 K to 575 K. It is shown that the temperature dependence of this zero-magnetic-field splitting of about 2D=0.38 cm−1 is due to the thermal expansion of the lattice. It is found that $$\frac{{\partial \ln D}}{{\partial \ln R}} = 6.18$$ whereR is the interparticle distance. A new calculation of the ground state splitting is then used to explain this number as well as the splitting itself. Crystal field parameters are taken from optical measurements and from theg-factors.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01313037

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