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Muon-spin-relaxation studies of magnetic order in heavily doped La2xSrxNiO4+δ

K. H. Chow, P. A. Pattenden, S. J. Blundell, W. Hayes, F. L. Pratt, Th. Jestädt, M. A. Green, J. E. Millburn, M. J. Rosseinsky, B. Hitti, S. R. Dunsiger, R. F. Kiefl, C. Chen, and A. J. S. Chowdhury
Phys. Rev. B 53, R14725(R) – Published 1 June 1996
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Abstract

We report muon-spin-relaxation measurements on a series of compounds with composition La2xSrxNiO4+δ where the net hole concentration x+2δ is greater than 0.4. A magnetic transition is found in all the samples studied which occurs at a composition-dependent temperature TM. Below TM clear precession signals are observed in zero applied magnetic field, indicating the existence of at least short-range magnetic order on a time scale greater than 108 s. Above TM the correlation times decrease by several orders of magnitude. The measurements of TM as a function of the net hole concentration extend the determination of Néel temperatures by previous neutron diffraction measurements to higher doping levels.

  • Received 12 January 1996

DOI:https://doi.org/10.1103/PhysRevB.53.R14725

©1996 American Physical Society

Authors & Affiliations

K. H. Chow, P. A. Pattenden, S. J. Blundell, W. Hayes, F. L. Pratt, and Th. Jestädt

  • Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, United Kingdom

M. A. Green, J. E. Millburn, and M. J. Rosseinsky

  • Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, United Kingdom

B. Hitti

  • TRIUMF, 4004 Wesbrook Mall, Vancouver, Canada V6T 2A3

S. R. Dunsiger and R. F. Kiefl

  • Department of Physics and/or Canadian Institute for Advanced Research, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1

C. Chen and A. J. S. Chowdhury

  • Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, United Kingdom

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Vol. 53, Iss. 22 — 1 June 1996

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