High-temperature 17O NMR as a probe of electron localization and structure in transition metal oxides

Solid State Ionics

Volumn 91, Issue 3-4, 1996, Pages 175-181

  Adler, Stuart B ^a,b   Reimer, Jeffrey A ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b CERAMATEC INC   (United States)

Author keywords

17O; Electron localization; NMR; Perovskites

Indexed keywords

ELECTRON RESONANCE; ELECTRONIC STRUCTURE; HIGH TEMPERATURE EFFECTS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; OXYGEN; TRANSITION METAL COMPOUNDS;

CURIE WEISS SHIFT; ELECTRON LOCALIZATION; KNIGHT SHIFT; TRANSITION METAL OXIDES;

PEROVSKITE;

EID: 0030565949     PISSN: 01672738     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0167-2738(96)00440-7     Document Type: Article

References (30)

1. W. Harrison, Electronic Structure and the Properties of Solids (W.H. Freeman and Company, San Francisco, 1980).
2. P.A. Cox, The Electronic Structure and Chemistry of Solids (Oxford University Press, New York, 1987).
3. P.A. Cox, Transition Metal Oxides (Clarendon Press, Oxford, 1992).
4. L.R. Friedman and D.P. Tunstall, The Metal Nonmetal Transition in Disordered Systems, Scottish Universities Summer School (Physics Publications, Edinburgh, 1974).
5. C.N.R. Rao and K.J. Rao, Phase Transitions in Solids (McGraw-Hill, New York, 1977).
6. K.A. Benedict and J.T. Chalker, Localization 1990, Institute of Physics Conference Series No. 108, Institute of Physics, Bristol, 1991.
7. Y. Teraoka, T. Nobunaga, K. Okamoto, N. Miura and N. Yamazoe, Solid State Ionics 48 (1991) 207.
8. S.L. Russek, Ph.D. Thesis, University of California, Berkeley (1993).
9. N.F. Mott, Metal Insulator Transitions, 2nd ed. (Taylor and Francis, London, 1990).
10. S. Adler, S. Russek, J. Reimer, M. Fendorf, A. Stacy, Q. Huang, A. Santoro, J. Lynn, J. Baltisberger and U. Werner, Solid State Ionics 68 (1994) 193.
11. S.B. Adler, J.N. Michaels and J.A. Reimer, Rev. Sci. Instrum. 61 (1990) 3368.
12. S.B. Adler and J.A. Reimer, J. Amer. Chem. Soc. 116 (1994) 675.
13. M.S. Went and J.A. Reimer, Chem. Mater. 2 (1990) 391.
14. G.C. Carter, L.H. Bennett and D.J. Kahan, Metallic Shifts in NMR (Pergamon Press, New York, 1977).
15. In liquids there often remains a 'pseudo contact shift' associated with the anisotropy of the electronic g-tensor (e.g. H.M. McConnel and R.E. Robertson, J. Chem. Phys. 29 (1958) 1361). To our knowledge the presence of this mechanism in solids has not been established.
16. K.E. Schwarzhans, Angew. Chem., Int. Ed. Engl. 9 (1970) 946.
17. J.A. Gardner and C.P. Flynn, Phil. Mag. 15 (1967) 1233. See also p. 1255.
18. F. Taulelle, private communication.
19. For oxygen-17 in transition metal perovskites, however, it is unclear what the dominant mechanisms are (M.S. Went and J.A. Reimer, Chem. Mater. 2 (1990) 391).
20. One might speculate that since the electronic states at the Fermi level in transition metal perovskite oxides contain substantial oxygen 2p character [P.A. Cox, Transition Metal Oxides (Clarendon Press, Oxford, 1992)], the mechanism may involve polarization of the 2s core.
21. A. Abragham, The Principles of Nuclear Magnetism (Clarendon Press, Oxford, 1961).
22. L. Reven, J. Shore, S. Yang, T. Duncan, D. Schwartz, J. Chung and E. Oldfield, Phys. Rev B 43 (1991) 10,466.
23. Experimental separation of the 'chemical' shift from other terms is experimentally quite difficult. Most diamagnetic oxides, however, has very small chemical shifts, of the order of 100 ppm; see Ref. 13 and the references therein.
24. E. Oldfield, C. Coretsopoulos, S. Yang, L. Reven, H.C. Lee, J. Shore, O.H. Han, E. Ramli and D. Hinks, Phys Rev. B 40 (1989) 6832.
25. L. Reven, J. Shore, S. Yang, T. Duncan, D. Schwartz, J. Chung and E. Oldfield, Phys. Rev B 43 (1991) 10466.
26. B.C.H. Steele, Mater. Sci. Eng. B13 (1992) 79.
27. J.B. Goodenough, J. Appl. Phys. 39 (1968) 403.
28. P.M. Raccah and J.B. Goodenough, J. Appl. Phys. 39 (1968) 1209.
29. V.G. Bhide, D.S. Rajoria, Y.S. Reddy, G. Rama Rao, G.V. Subba Rao and C.N.R. Rao, Phys. Rev. Lett. 28 (1972) 1133.
30. V.G. Bhide, D.S. Rajoria, C.N.R. Rao, G. Rama Rao and V.G. Jadhao, Phys. Rev. B 12 (1975) 2832.