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Orthorhombic Electron Spin Resonance Spectrum of U3+ in CaF2

Mahlab, E. and Volterra, V. and Low, W. and Yariv, A. (1963) Orthorhombic Electron Spin Resonance Spectrum of U3+ in CaF2. Physical Review, 131 (3). pp. 920-922. ISSN 0031-899X. doi:10.1103/PhysRev.131.920.

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An orthorhombic spectrum of U3+ in CaF2 was measured. The orthorhombic X, Y axes are found to lie in the (110) plane and the Z axis perpendicular to these axes. The X axes are at ±(19±1)° with the [11̅0] direction. There are, in general, twelve inequivalent magnetic sites. The g factors corresponding to one set of axes are gx=1.38±0.01, gy=2.85±0.02, and gz=2.94±0.01. Various models explaining this spectrum are discussed. The most likely model is that of an interstitial F- in the second-nearest neighbor position.

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Additional Information:©1963 The American Physical Society Received 18 March 1963 We are grateful to Dr. B. Schroeder of Solid-State Materials and to W.A. Hargreaves of Optovac Inc. for providing us with some of these crystals. The research reported in this document has been sponsored in part by the Air Force Office of Scientific Research, O.A.R. through the European Office of Aerospace Research, USAF.
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Deposited On:20 Dec 2006
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