Electron-Spin-Resonance Linewidth Variation with Temperature in Some Rare-Earth Salts: <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mfrac><mrow><mrow><msub><mrow><mi>T</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></mrow><mrow><mrow><msub><mrow><mi>T</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></mrow></mfrac></math></span> Ratios

H. J. Stapleton; K. L. Brower

doi:10.1103/PhysRev.178.481

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Electron-Spin-Resonance Linewidth Variation with Temperature in Some Rare-Earth Salts: $\frac{T_{1}}{T_{2}}$ Ratios

H. J. Stapleton

K. L. Brower

Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801

Sandia Laboratories, Albuquerque, New Mexico 87115

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Phys. Rev. 178, 481 – Published 10 February, 1969

DOI: https://doi.org/10.1103/PhysRev.178.481

Abstract

We have measured the temperature dependence of the electron-spin-resonance linewidth of Ce, Nd, and Sm in lanthanum magnesium nitrate from below 4°K to as high as 26°K. Both Ce and Nd displayed a linewidth which was essentially Lorentzian at the lowest temperature and which broadened with increasing temperature in accordance with an Orbach relaxation mechanism. A comparison of the strength of this broadening with standard relaxation measurements below 4°K indicated that $\frac{T_{1}}{T_{2}}$ was 8.6 for the Nd sample and was estimated to be 13 for the Ce crystal. Sm displayed a temperature-dependent broadening which could be interpreted as due either to a Raman or an Orbach mechanism.

References (23)

Frank L. Blatt, Physics of Electronic Conduction in Solids (McGraw-Hill Book Co., New York, 1968), Chap. 8, p. 287
B. A. Young, Ph.D. thesis, University of Illinois, 1967 (unpublished)
P. L. Scott, H. J. Stapleton, and C. Wainstein, Phys. Rev. 137, A71 (1965)
F. Bloch, Phys. Rev. 70, 460 (1946)
D. W. Posener, Australian J. Phys. 12, 184 (1959)
R. Orbach, Proc. Roy. Soc. (London) A264, 458 (1961)
J. H. Van Vleck, Phys. Rev. 57, 426 (1940)
A. Kiel and W. B. Mims, Phys. Rev. 161, 386 (1967)
Chao-Yuan Huang, Phys. Rev. 154, 215 (1967)
M. J. M. Leask, R. Orbach, M. J. D. Powell, and W. P. Wolf, Proc. Roy. Soc. (London) A272, 371 (1963)
K. H. Langley and C. D. Jeffries, Phys. Rev. 152, 358 (1966)
R. H. Ruby, H. Benoit, and C. D. Jeffries, Phys. Rev. 127, 51 (1962)
William J. Brya and Peter E. Wagner, Phys. Rev. 147, 239 (1966)
J. H. M. Thornley, Phys. Rev. 132, 1492 (1963)
J. W. Culvahouse (private communication)
A. H. Cooke and H. J. Dufus, Proc. Roy. Soc. (London) A229, 407 (1955)
B. R. Judd, Proc. Roy. Soc. (London) A232, 458 (1955)
B. A. Young and H. J. Stapleton, Phys. Letters 21, 498 (1966) Bull. Am. Phys. Soc. 12, 291 (1967)
B. A. Young and H. J. Stapleton, Phys. Rev. 176, 502 (1968)
C. A. Bailey, Proc. Phys. Soc. (London) 83, 369 (1964)
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P. L. Scott and C. D. Jeffries, Phys. Rev. 127, 32 (1962)
J. W. Culvahouse and Peter M. Richards, Phys. Rev. 178, 485 (1969)

[c1] Frank L. Blatt, Physics of Electronic Conduction in Solids (McGraw-Hill Book Co., New York, 1968), Chap. 8, p. 287

[c2] B. A. Young, Ph.D. thesis, University of Illinois, 1967 (unpublished)

[c3] P. L. Scott, H. J. Stapleton, and C. Wainstein, Phys. Rev. 137, A71 (1965)

[c4] F. Bloch, Phys. Rev. 70, 460 (1946)

[c5] D. W. Posener, Australian J. Phys. 12, 184 (1959)

[c6] R. Orbach, Proc. Roy. Soc. (London) A264, 458 (1961)

[c7] J. H. Van Vleck, Phys. Rev. 57, 426 (1940)

[c8] A. Kiel and W. B. Mims, Phys. Rev. 161, 386 (1967)

[c9] Chao-Yuan Huang, Phys. Rev. 154, 215 (1967)

[c10] M. J. M. Leask, R. Orbach, M. J. D. Powell, and W. P. Wolf, Proc. Roy. Soc. (London) A272, 371 (1963)

[c11] K. H. Langley and C. D. Jeffries, Phys. Rev. 152, 358 (1966)

[c12] R. H. Ruby, H. Benoit, and C. D. Jeffries, Phys. Rev. 127, 51 (1962)

[c13] William J. Brya and Peter E. Wagner, Phys. Rev. 147, 239 (1966)

[c14] J. H. M. Thornley, Phys. Rev. 132, 1492 (1963)

[c15] J. W. Culvahouse (private communication)

[c16] A. H. Cooke and H. J. Dufus, Proc. Roy. Soc. (London) A229, 407 (1955)

[c17] B. R. Judd, Proc. Roy. Soc. (London) A232, 458 (1955)

[c18] B. A. Young and H. J. Stapleton, Phys. Letters 21, 498 (1966) Bull. Am. Phys. Soc. 12, 291 (1967)

[c19] B. A. Young and H. J. Stapleton, Phys. Rev. 176, 502 (1968)

[c20] C. A. Bailey, Proc. Phys. Soc. (London) 83, 369 (1964)

[c21] A. Friederich, K. H. Hellwege, and H. Lammermann, Z. Physik 159, 524 (1960)

[c22] P. L. Scott and C. D. Jeffries, Phys. Rev. 127, 32 (1962)

[c23] J. W. Culvahouse and Peter M. Richards, Phys. Rev. 178, 485 (1969)

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Electron-Spin-Resonance Linewidth Variation with Temperature in Some Rare-Earth Salts: $\frac{T_{1}}{T_{2}}$ Ratios

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Electron-Spin-Resonance Linewidth Variation with Temperature in Some Rare-Earth Salts: T1T2 Ratios

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References (23)

Electron-Spin-Resonance Linewidth Variation with Temperature in Some Rare-Earth Salts: $\frac{T_{1}}{T_{2}}$ Ratios