EPR of Co+2 in Mg(CH3COO)2·4H2O |
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Authors: | Satoru Simizu NS Vander Ven SA Friedberg |
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Institution: | Physics Department, Carnegie-Mellon University, Pittsburgh, PA 15213, U.S.A. |
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Abstract: | EPR spectra of the 59Co+2 ion in oriented crystals of Mg(CH3COO)2·4H2O have been measured at 9.4 GHz and a temperature of 4.2 K. The data for each of the two metal ion sites per unit cell are well-described by a spin Hamiltonian for with gx = 6.13, gy = 389, gz = 2.49 and Ax = 0.0193, Ay' = 0.075, Az' = 0.0032 cm?1. Only the x-axes of the g- and A-tensors coincide. Orientation of the principal directions relative to the crystal axes has been established for the g- and A-tensors at both sites. They are consistent with the weakly ferromagnetic canted antiferromagnetism found in Co(CH3COO)2·4H2O below TN ?85mK. |
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