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Measurement of the Magnetic form Factor of Cu in Antiferromagnetic La2CuO4

Published online by Cambridge University Press:  28 February 2011

S. Mitsuda ,
T. Freltoft ,
G. Shirane ,
J. P. Remeika  and
A. S. Cooper
S. Mitsuda
Affiliation:
Institute for Solid State Physics, University of Tokyo, Tokyo 106, Japan Brookhaven National Laboratory, Upton, New York 11973
T. Freltoft
Affiliation:
Brookhaven National Laboratory, Upton, New York 11973
G. Shirane
Affiliation:
Brookhaven National Laboratory, Upton, New York 11973
J. P. Remeika
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974
A. S. Cooper
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974
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Abstract

The magnetic form factor for Cu in the antiferromagnetic state of a single crystal La2CuO4 has been measured using neutron diffraction. Our result is consistent with Freeman and Watson's calculation for Cu2+, at least up to Q=4Å1, although a plateau between 1 and 3 Å-1 suggests a small contribution of magnetic moment at the out-of-plane oxygen sites. For larger values of Q the form factor for La2CuO4 seems to drop faster than for Cu2+. The sample ordered antiferromagnetically at TN ≃ 185K with an average ordered moment μ = 0.30/μB per Cu atom.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 423
Copyright
Copyright © Materials Research Society 1988

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References

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