Volume 178, Issue 2

February 1969

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ARTICLES

Pressure Dependence of the Knight Shift in V Metal

Toshimoto Kushida and J. C. Murphy

Phys. Rev. 178, 433 (1969) - Published 10 February, 1969

Mössbauer Effect in $K_{3}$ Fe ${(CN)}_{6}$

W. T. Oosterhuis and George Lang

Phys. Rev. 178, 439 (1969) - Published 10 February, 1969

Spectroscopic Studies of SrTi $O_{3}$ Using Impurity-Ion Probes

S. E. Stokowski and A. L. Schawlow

Phys. Rev. 178, 457 (1969) - Published 10 February, 1969

Dielectric-Related Optical Line Shifts in SrTi $O_{3}$ : ${Cr}^{3 +}$

S. E. Stokowski and A. L. Schawlow

Phys. Rev. 178, 464 (1969) - Published 10 February, 1969

Electron-Paramagnetic-Resonance Line Shape of ${Ni}^{2 +}$ in MgO

Stephen R. P. Smith, Fricis Dravnieks, and John E. Wertz

Phys. Rev. 178, 471 (1969) - Published 10 February, 1969

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

H. J. Stapleton and K. L. Brower

Phys. Rev. 178, 481 (1969) - Published 10 February, 1969

$T_{1}$ and $T_{2}$ for Orbach Relaxation Processes

J. W. Culvahouse and Peter M. Richards

Phys. Rev. 178, 485 (1969) - Published 10 February, 1969

Electron-Paramagnetic-Resonance Study of Cr Ions and Exchange-Coupled Cr Ion Pairs in the Bi $I_{3}$ Structure

R. W. Bené

Phys. Rev. 178, 497 (1969) - Published 10 February, 1969

Coherence and Polarization Effects in Mössbauer Absorption by Single Crystals

R. M. Housley, R. W. Grant, and U. Gonser

Phys. Rev. 178, 514 (1969) - Published 10 February, 1969

Nuclear Electric Field Gradient and Mean Square Displacement of the Iron Sites in Sodium Nitroprusside

R. W. Grant, R. M. Housley, and U. Gonser

Phys. Rev. 178, 523 (1969) - Published 10 February, 1969

Possibility of Observing Effects of the Superconducting Transition on Positron Thermalization in Metals

A. Perkins and E. J. Woll, Jr.

Phys. Rev. 178, 530 (1969) - Published 10 February, 1969

Mössbauer-Effect Measurements of the Thermal Shift of ${Sn}^{119}$ in $β - S n$ below 90°K

N. S. Snyder

Phys. Rev. 178, 537 (1969) - Published 10 February, 1969

Zeeman Effect in the Absorption Spectra of Trivalent Ytterbium Ions in Different Site Symmetries in Calcium Fluoride

J. Kirton and A. M. White

Phys. Rev. 178, 543 (1969) - Published 10 February, 1969

Anomalous Population Distributions in an Optically Excited Metastable Level in Ca $F_{2}$ : ${Tm}^{2 +}$

C. H. Anderson and E. S. Sabisky

Phys. Rev. 178, 547 (1969) - Published 10 February, 1969

Pseudoquadrupole Shift and Asymmetric Line Broadening of Recoilless Nuclear Resonance Spectra

M. J. Clauser and R. L. Mössbauer

Phys. Rev. 178, 559 (1969) - Published 10 February, 1969

Theoretical Treatment of ${Gd}^{+ 3}$ Terms Split in the Crystal Field of Ca $F_{2}$

M. Schlesinger and M. Nerenberg

Phys. Rev. 178, 568 (1969) - Published 10 February, 1969

Mössbauer Effect of ${Er}^{166}$ in Erbium Orthochromite

M. Eibschütz, R. L. Cohen, and K. W. West

Phys. Rev. 178, 572 (1969) - Published 10 February, 1969

Paramagnetic Anisotropy and Crystal-Field Splittings in EuAl $O_{3}$

L. Holmes, R. Sherwood, L. G. Van Uitert, and S. Hüfner

Phys. Rev. 178, 576 (1969) - Published 10 February, 1969

Nuclear Magnetic Relaxation of ${}^{31}P$ in Diamagnetic ThP and the Paramagnetic State of UP

Moshe Kuznietz and G. A. Matzkanin

Phys. Rev. 178, 580 (1969) - Published 10 February, 1969

Some Properties of a Zeeman Laser with Anisotropic Mirrors

Howard Greenstein

Phys. Rev. 178, 585 (1969) - Published 10 February, 1969

Spin-Lattice Relaxation of $F$ Centers in Alkali Halides: Theory and Optical Measurements to 50 kG

H. Panepucci and L. F. Mollenauer

Phys. Rev. 178, 589 (1969) - Published 10 February, 1969

Theory of Spin Resonance of Localized Moments in Normal Metals

B. Caroli, C. Caroli, and D. R. Fredkin

Phys. Rev. 178, 599 (1969) - Published 10 February, 1969

Electron Paramagnetic Resonance of Tetravalent Manganese Ions at Tetragonal and Octahedral Sites in MgO

J. John Davies, Stephen R. P. Smith, and John E. Wertz

Phys. Rev. 178, 608 (1969) - Published 10 February, 1969

Correlations in Light from a Laser at Threshold

R. F. Chang, V. Korenman, C. O. Alley, and R. W. Detenbeck

Phys. Rev. 178, 612 (1969) - Published 10 February, 1969

Determination of the Fermi Surface of Copper by Positron Annihilation

P. E. Mijnarends

Phys. Rev. 178, 622 (1969) - Published 10 February, 1969

Relativistic Effects on the Hyperfine Interactions in Alkali Metals

L. Tterlikkis, S. D. Mahanti, and T. P. Das

Phys. Rev. 178, 630 (1969) - Published 10 February, 1969

Nuclear Spin-Lattice Relaxation in Liquid Nontransition Metals

F. A. Rossini and W. D. Knight

Phys. Rev. 178, 641 (1969) - Published 10 February, 1969

Amplitude Dependence of Shear-Wave Attenuation near $T_{c}$ in Indium

K. Fossheim and J. R. Leibowitz

Phys. Rev. 178, 647 (1969) - Published 10 February, 1969

Flux-Flow Noise in a Type-I Superconductor

G. J. Van Gurp

Phys. Rev. 178, 650 (1969) - Published 10 February, 1969

Hysteresis in Superconducting Alloys—Temperature and Field Dependence of Dislocation Pinning in Niobium Alloys

W. A. Fietz and W. W. Webb

Phys. Rev. 178, 657 (1969) - Published 10 February, 1969

Effective Masses in Zr-Doped Superconducting Ceramic SrTi $O_{3}$

D. M. Eagles

Phys. Rev. 178, 668 (1969) - Published 10 February, 1969

Grüneisen Functions for Some Type-I Superconductors

R. W. Munn

Phys. Rev. 178, 677 (1969) - Published 10 February, 1969

Critical-Field Ratio $\frac{H_{c 3}}{H_{c 2}}$ for Pure Superconductors Outside the Landau-Ginzburg Region. I. $T ≃ 0$ °K

Chia-Ren Hu and Victor Korenman

Phys. Rev. 178, 684 (1969) - Published 10 February, 1969

Symmetry Considerations in the Theory of the Upper Critical Field of a Superconductor

D. R. Fredkin and M. T. Béal-Monod

Phys. Rev. 178, 696 (1969) - Published 10 February, 1969

Superconductivity and Electron Interaction in the $3 d$ Band

K. Andres, E. Bucher, J. P. Maita, and R. C. Sherwood

Phys. Rev. 178, 702 (1969) - Published 10 February, 1969

Dielectric Properties of the Wigner and Related Dipole Lattices

Amitabha Bagchi

Phys. Rev. 178, 707 (1969) - Published 10 February, 1969

Tunneling Study of Superconductivity in Tl-Pb-Bi Alloys

R. C. Dynes, J. P. Carbotte, D. W. Taylor, and C. K. Campbell

Phys. Rev. 178, 713 (1969) - Published 10 February, 1969

Exchange Coupling and Conduction-Electron Polarization in Metals. II

R. E. Watson and A. J. Freeman

Phys. Rev. 178, 725 (1969) - Published 10 February, 1969

Theory and Measurement of the X-Ray Satellite Reflections in Holmium Due to the Aspherical $4 f$ Charge Density

D. T. Keating

Phys. Rev. 178, 732 (1969) - Published 10 February, 1969

Ultrasonic Attenuation by Interaction with the Soft Optic Mode in KTa $O_{3}$

Harrison H. Barrett

Phys. Rev. 178, 743 (1969) - Published 10 February, 1969

Low-Temperature Spin Correlations about a Localized Magnetic Impurity Moment

Martin S. Fullenbaum and David S. Falk

Phys. Rev. 178, 763 (1969) - Published 10 February, 1969

Magneto-Elastic Interactions in Gadolinium

M. Long, Jr., A. R. Wazzan, and R. Stern

Phys. Rev. 178, 775 (1969) - Published 10 February, 1969

Spin Waves in ${Ga}_{x} {Fe}_{3 - x} O_{4}$

K. T. Möglestue

Phys. Rev. 178, 781 (1969) - Published 10 February, 1969

Theory of Magnetic Ordering in the Heavy Rare Earths

W. E. Evenson and S. H. Liu

Phys. Rev. 178, 783 (1969) - Published 10 February, 1969

Magnetic Behavior of the Pt+Fe System Near ${Pt}_{3}$ Fe

D. Palaith, C. W. Kimball, R. S. Preston, and J. Crangle

Phys. Rev. 178, 795 (1969) - Published 10 February, 1969

Frequency-Dependent Self-Correlation Function for the Heisenberg Spin System in One Dimension

Raza A. Tahir-Kheli and Daniel G. McFadden

Phys. Rev. 178, 800 (1969) - Published 10 February, 1969

${Mn}^{2}$ +-F- ${Fe}^{2 +}$ Exchange Interactions

G. K. Wertheim, H. J. Guggenheim, M. Butler, and V. Jaccarino

Phys. Rev. 178, 804 (1969) - Published 10 February, 1969

Irreversibility in Heisenberg Spin Systems. III. Kinetic Equations for the Autocorrelation Function at Finite Temperature

P. Résibois and M. De Leener

Phys. Rev. 178, 806 (1969) - Published 10 February, 1969

Irreversibility in Heisenberg Spin Systems. IV. Time-Dependent Fluctuations at the Curie Point

M. De Leener and P. Résibois

Phys. Rev. 178, 819 (1969) - Published 10 February, 1969

Ferromagnetic Resonance in Nickel at High Temperatures

S. M. Bhagat and E. P. Chicklis

Phys. Rev. 178, 828 (1969) - Published 10 February, 1969

Spin-Wave Dispersion Relations in Ferromagnetic Fe-Si Alloys

B. Antonini, F. Menzinger, A. Paoletti, and A. Tucciarone

Phys. Rev. 178, 833 (1969) - Published 10 February, 1969

Spin Waves in Thin Films; Dipolar Effects

H. Benson and D. L. Mills

Phys. Rev. 178, 839 (1969) - Published 10 February, 1969

Correlations at the Critical Point of the Ising Model

M. J. Buckingham and J. D. Gunton

Phys. Rev. 178, 848 (1969) - Published 10 February, 1969

Effects of Orbital Degeneracy on a Magnetic Impurity in a Nonmagnetic Metal

Gary L. Lucas and Daniel C. Mattis

Phys. Rev. 178, 854 (1969) - Published 10 February, 1969

Ultrasonic Propagation in RbMn $F_{3}$ . I. Elastic Properties

R. L. Melcher and D. I. Bolef

Phys. Rev. 178, 864 (1969) - Published 10 February, 1969

Kondo Resistivity due to a Pair of Interacting Impurities

M. T. Béal-Monod

Phys. Rev. 178, 874 (1969) - Published 10 February, 1969

Phase Transition in the Two-Dimensional Heisenberg Ferromagnet

Vinod Mubayi and Robert V. Lange

Phys. Rev. 178, 882 (1969) - Published 10 February, 1969

COMMENTS

Relative Transmission of Positive and Negative Electrons through Aluminum

C. Sharp Cook

Phys. Rev. 178, 895 (1969) - Published 10 February, 1969