Abstract
The electron paramagnetic resonance spectra of isolated and dimer impurity centers of trivalent chromium ions in the octahedral Ml sites in synthetic forsterite are studied in the frequency range of 65–90 GHz. The measurements are performed at 4.2 K in magnetic field from −0.04 to 0.3 T. The zero-field splitting between spin doublets of the isolated Cr3+ ion Δs = 66.7 GHz and between spin sublevels of the Cr3+-Cr3+ dimer Δd1 = 71.5 GHz and Δd2 = 73.0 GHz is measured directly at zero field. The analysis of the spin Hamiltonian parameters shows that the dimer center consists of a pair of Cr3+ ions with an Mg2+ vacancy between them replacing three Mg2+ ions situated in a quasi-one-dimensional chain aligned parallel to the crystal c-axis. It is found that the exchange interaction in the dimer is ferromagnetic with parameters Jz = 0.47 GHz and Jt = 0.79 GHz.
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Petricevic V., Gayen S.K., Alfano R.R., Yamagishi K., Anzai H., Yamaguchi Y.: Appl. Phys. Lett.52, 1040–1042 (1988)
Petricevic V., Gayen S.K., Alfano R.R.: Opt. Lett.14, 612–614 (1989)
Birle J.D., Gibbs G.V., Moore P.B., Smith J.V.: Am. Mineral.53, 807–824 (1968)
Burns R.G.: Am. Mineral.55, 1608–1632 (1970)
Chatelain A., Weeks R.A.: J. Chem. Phys.52, 5682–5687 (1970)
Chatelain A., Weeks R.A.: J. Chem. Phys.58, 3722–3726 (1973)
Rager H.: Phys. Chem. Miner.1, 371–378 (1977)
Rager H., Hosoya S., Weiser G.: Phys. Chem. Miner.15, 383–389 (1988)
Bershov L.V., Mineeva R.M., Speransky A.V., Hafner S.S.: Dokl. Akad. Nauk260, 191–194 (1981)
Bershov L.V., Gaite J.-M., Rager H.: Phys. Chem. Miner.9, 95–101 (1983)
Jia W., Liu H., Jaffe S., Yen W.M., Denker B.: Phys. Rev. B43, 5234–5242 (1991)
Petricevic V., Gayen S.K., Alfano R.R.: Appl. Phys. Lett.53, 2590–2592 (1989)
Hoffman K.R., Casas-Gonsales J., Jacobsen J., Yen W.M.: Phys. Rev. B44, 12589–12592 (1991)
Witemore M.H., Sacra A., Singel D.: J. Chem. Phys.98, 3656–3664 (1993)
Tarasov V.F., Shakurov G.S., Gavrilenko A.N.: Phys. Solid State37, 270–272 (1995)
Tarasov V.F., Shakurov G.S.: Appl. Magn. Reson.2, 571–576 (1991)
Abragam A., Bleaney B.: Electron Paramagnetic Resonance of Transition Ions. Oxford: Clarendon Press 1970.
McPherson G.L., Henling L.M.: Solid State Commun.19, 3–56 (1976)
Henling L.M., McPherson G.L.: Phys. Rev. B16, 4756–4760 (1977)
McPherson G.L., Devaney K.O.: J. Phys. C: Solid State Phys.13, 1735–1743 (1980)
Tarasov V.F., Shakurov G.S., Malkin B.Z., Iskhakova A.I., Heber J., Altwein M.: JETP Lett.65, 559–565 (1997)
Malkin B.Z., Iskhakova A.I., Tarasov V.F., Shakurov G.S., Heber J., Altwein M.: J. Alloys Compounds275-277, 209–213 (1998)
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Shakurov, G.S., Tarasov, V.F. High-frequency tunable EPR spectroscopy of Cr3+ in synthetic forsterite. Appl. Magn. Reson. 21, 597–605 (2001). https://doi.org/10.1007/BF03162432
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DOI: https://doi.org/10.1007/BF03162432