Provider: ingentaconnect
Database: ingentaconnect
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TY - ABST
AU - Veigele, William J.
TI - EPR Spectroscopy of Vacancies in KF: Mn^{2+}
JO - Applied Spectroscopy
PY - 1966-03-01T00:00:00///
VL - 20
IS - 2
SP - 113
EP - 114
N2 - When nonstoichiometric impurities enter a crystal lattice substitutionally, they are charge compensated by defects such as vacancies or interstitials which associate with the impurity at nearby sites or are unassociated at distant sites. These impurity-defect complexes have characteristic
parameters such as diffusion coefficients and binding energies which may be studied with electron paramagnetic resonance (EPR) spectroscopy. If *c* is the ion fraction impurity concentration for a particular defect, *p* the degree of association, *cp* the fraction of associated,
and *c* (1–*p)* the fraction of unassociated impurity-defect complexes, application of the mass action law gives *cp/[c* (1–*p*)]^{2}=*K(T)*, where *K(T)* may be expressed such that

*p*/(1–*p*)^{2}=*zce*^{E/kT,}
(1)

where *z*=6 is the number of distinct orientations of the complex and *E* is the Gibbs free energy of binding. A semilog plot against 1/*kT* of Eq. 1 would give *E* and *c* from the slope and intercept, respectively, of the resulting straight line.
UR - http://www.ingentaconnect.com/content/sas/sas/1966/00000020/00000002/art00006
M3 - doi:10.1366/000370266774386308
UR - http://dx.doi.org/10.1366/000370266774386308
ER -