Neutron-Diffraction Determination of Antiferromagnetic Structure of Cu Ions in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Y</mi><mrow><msub><mrow><mi mathvariant="normal">Ba</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Cu</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>6</mn><mo>+</mo><mi>x</mi></mrow></msub></mrow></math></span> with <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>x</mi><mo>=</mo><mn>0.0</mn><mn></mn><mi> </mi><mi mathvariant="normal">and</mi><mi> </mi><mn>0.15</mn></math></span>

J. M. Tranquada; D. E. Cox; W. Kunnmann; H. Moudden; G. Shirane; M. Suenaga; P. Zolliker; D. Vaknin; S. K. Sinha; M. S. Alvarez; A. J. Jacobson; D. C. Johnston

doi:10.1103/PhysRevLett.60.156

Neutron-Diffraction Determination of Antiferromagnetic Structure of Cu Ions in $Y {Ba}_{2} {Cu}_{3} O_{6 + x}$ with $x = 0.0 and 0.15$

J. M. Tranquada, D. E. Cox, W. Kunnmann, H. Moudden, G. Shirane, M. Suenaga, P. Zolliker, D. Vaknin, S. K. Sinha, M. S. Alvarez, A. J. Jacobson, and D. C. Johnston

Phys. Rev. Lett. 60, 156 – Published 11 January 1988

Abstract

Neutron-diffraction experiments on ceramic powders of $Y {Ba}_{2} {Cu}_{3} O_{6 + x}$ (nonsuperconducting, with $x = 0.0 and 0.15$ have confirmed the existence of long-range, three-dimensional, antiferromagnetic order of the Cu spins. The structure determination was aided by the use of uniaxially oriented powders. The ordering wave vector within a Cu $O_{2}$ plane is (½ ½) and the planes are coupled antiferromagnetically along the $c$ axis. The Néel temperature is 400±10 K for the $x = 0.15 \pm 0.05$ sample and ≳500 K for $x = 0.0$ .

Received 23 November 1987

DOI:https://doi.org/10.1103/PhysRevLett.60.156

Authors & Affiliations

J. M. Tranquada, D. E. Cox, W. Kunnmann, H. Moudden^*, G. Shirane, M. Suenaga, and P. Zolliker

Brookhaven National Laboratory, Upton, New York 11973

D. Vaknin^†, S. K. Sinha, M. S. Alvarez, A. J. Jacobson, and D. C. Johnston^‡

Corporate Research Laboratories, Exxon Research and Engineering Company, Annandale, New Jersey 08801

^*Permanent address: Centre National de la Recherche Scientifique, Université de Paris-Sud, Orsay, France.
^†Also at the Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, PA 19104.
^‡Present address: Physics Department, Iowa State University, Ames, IA 50010.