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D. M. Hannon

doi:10.1103/PhysRev.164.366

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Electron Paramagnetic Resonance of ${Fe}^{3 +}$ and ${Ni}^{3 +}$ in KTa $O_{3}$

D. M. Hannon^*

Gordon McKay Laboratory, Harvard University, Cambridge, Massachusetts

^*Supported by U.S. Air Force Cambridge Research Laboratory AF 19-(628)-3874.

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Phys. Rev. 164, 366 – Published 10 December, 1967

DOI: https://doi.org/10.1103/PhysRev.164.366

Abstract

The electron paramagnetic resonance of ${Fe}^{3 +}$ and ${Ni}^{3 +}$ in KTa $O_{3}$ is reported. Both impurity ions are substitutional at the two cation sites of the host. For ${Fe}^{3 +}$ the room-temperature $a$ values are 288±5× $10^{- 4}$ ${cm}^{- 1}$ for ${Fe}^{3 +}$ on ${Ta}^{5 +}$ site, and 30±1× $10^{- 4}$ ${cm}^{- 1}$ for ${Fe}^{+ 3}$ on the $K^{+ 1}$ site. The temperature variation of these parameters is discussed. ${Ni}^{3 +}$ at the ${Ta}^{5 +}$ is in a low-spin configuration and undergoes a Jahn-Teller axial distortion. Estimates of $10 D q$ from $g$ -shift formulas and axial ground-state splitting from line broadening are given. The resonance of ${Ni}^{3 +}$ at the $K^{+ 1}$ site indicates a negative crystal field with a $10 D q$ value of 7400 ${cm}^{- 1}$ derived from a $g$ -shift formula.

References (29)

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[c1] B. T. Matthias, Phys. Rev. 75, 1771 (1949)

[c2] J. K. Hulm, B. T. Matthias, and F. A. Long, Phys. Rev. 79, 885 (1949)

[c3] S. H. Wemple, Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, Massachusetts, 1963 (unpublished)

[c4] A. Reisman, F. Holtzberg, M. Berkenblit, and M. Berry, J. Am. Chem. Soc. 78, 4514 (1956)

[c5] W. A. Bonner, E. F. Dearborn, and L. G. Van Uitert, Am. Ceram. Soc. Bull. 44, 9 (1965)

[c6] T. G. Davis, thesis, Massachusetts Institute of Technology, Cambridge, Massachusetts, 1965 (unpublished)

[c7] J. H. Barrett, Phys. Rev. 86, 118 (1952)

[c8] W. Cochran, Advan. Phys. 9, 387 (1960)

[c9] J. K. Hulm, Proc. Phys. Soc. (London) A63, 1184 (1950)

[c10] J. K. Hulm, Phys. Rev. 92, 504 (1953)

[c11] B. T. Matthias and J. K. Hulm, Phys. Rev. 82, 108 (1951)

[c12] G. S. Pawley, W. Cochran, R. A. Cowley, and G. Dolling, Phys. Rev. Letters 17, 753 (1966)

[c13] J. S. Griffith, The Theory of Transition Metal Ions (Cambridge University Press, New York, 1961), p. 204

[c14] L. Rimai and G. Demars, in Paramagnetic Resonance, edited by W. Low (Academic Press Inc., New York, 1963), p. 51

[c15] R. S. Rubins and W. Low, in [14], p. 59

[c16] W. Low, Paramagnetic Resonance in Solids (Academic Press Inc., New York, 1960)

[c17] A. W. Hornig, R. C. Wemple, and H. E. Weaver, J. Phys. Chem. Solids 10, 1 (1959)

[c18] K. A. Müller, Helv. Phys. Acta 31, 173 (1958)

[c19] T. Castner, Jr., G. S. Newell, W. C. Holton, and C. P. Slicther, J. Chem. Phys. 32, 668 (1960)

[c20] H. H. Wickman, M. P. Klein, and D. A. Shirley, J. Chem. Phys. 41, 2113 (1965)

[c21] L. Rimai, T. Deutsch, and B. D. Silverman, Phys. Rev. 133A, 1123 (1964)

[c22] E. S. Kirkpatrick, K. A. Müller, and R. S. Rubins, Phys. Rev. 135, A86 (1964)

[c23] R. Lacroix, U. Höchli, and K. A. Müller, Helv. Phys. Acta 37, 627 (1964)

[c24] U. Höchli and K. A. Müller, Phys. Rev. Letters 12, 730 (1964)

[c25] S. Geschwind and J. P. Remeika, J. Appl. Phys. Suppl. 33, 3705 (1962)

[c26] U. Höchli, K. A. Müller, and P. Wysling, Phys. Letters 15, 5 (1965)

[c27] W. Low and J. T. Suss, Phys. Letters 7, 310 (1963)

[c28] H. Unoki and T. Sakudo, J. Phys. Soc. Japan 21, 1730 (1966)

[c29] W. M. Walsh, Jr., J. Jeener, and N. Bloembergen, Phys. Rev. 139, A1338 (1965)

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Electron Paramagnetic Resonance of ${Fe}^{3 +}$ and ${Ni}^{3 +}$ in KTa $O_{3}$

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Electron Paramagnetic Resonance of Fe3+ and Ni3+ in KTaO3

Abstract

References (29)

Electron Paramagnetic Resonance of ${Fe}^{3 +}$ and ${Ni}^{3 +}$ in KTa $O_{3}$