EPR spectra of Cr3+and Cr+centres in the linear-chain lattices, CsMgCl3, CsMgBr3and CsCdBr3
- 30 March 1980
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 13 (9), 1735-1743
- https://doi.org/10.1088/0022-3719/13/9/019
Abstract
The EPR spectra of a series of impurity centres containing Cr3+ which occur in crystals of CsMgCl3, CsMgBr3 and CsCdBr3 have been observed and analysed. Some form of localised charge compensation is required when chromium enters the CsMX3 crystals in the trivalent state. The magnetic properties of the Cr3+ centres are noticeably dependent on the mode of charge compensation. Uncompensated Cr3+ centres are produced when crystals doped with divalent chromium are exposed to X-rays. In some cases the irradiation also produces centres containing Cr+. All of the spectra can be accurately described by axial spin-Hamiltonians. The magnetic parameters of the various chromium centres are discussed in terms of the structures of the centre and the host crystal.Keywords
This publication has 12 references indexed in Scilit:
- Electron-paramagnetic-resonance spectrum of an exchange-coupled-pairPhysical Review B, 1978
- Coupled pairs of chromium(III) ions in crystals of cesium trichloromagnesate, cesium tribromomagnesate, and cesium tribromocadmate. A case of charge compensation induced pair formationJournal of the American Chemical Society, 1978
- EPR spectra of magnetically coupled pairs of G ions in crystals of CsMg, CsMg, and CsCdPhysical Review B, 1977
- EPR spectrum of coupled pairs ofions in single crystals of CsCdPhysical Review B, 1977
- Spectroscopic properties of vanadium(II), manganese(II), and nickel(II) in crystals of cesium tribromocadmateInorganic Chemistry, 1977
- Electron spin resonance spectra of V2+, Mn2+, and Ni2+ in single crystals of CsMgBr3 and CsMgI3The Journal of Chemical Physics, 1974
- Single-Crystal Paramagnetic Resonance Studies of V(II), Mn(II), and Ni(II) in CsMgCl3 and the Crystal Structure of CsMgCl3The Journal of Chemical Physics, 1970
- Paramagnetic Resonance Studies of Bonding in [CrCl5(H2O)]2—The Journal of Chemical Physics, 1966
- Spin Hamiltonian for Cr III Complexes. Calculation from Crystal Field and Molecular Orbital Models and ESR Determination for Some Ethylenediammine ComplexesThe Journal of Chemical Physics, 1964
- Investigation of the Bonding of Iron-Group Ions in Fluoride Crystals. IThe Journal of Chemical Physics, 1963