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Title: Magnetic ordering, spin waves, and Haldane-gap excitations in (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} linear-chain mixed-spin antiferromagnets

Abstract

Linear-chain nickelates with the composition (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} (x=1, x=0.75, x=0.5, and x=0.25) are studied in a series of neutron-scattering experiments. Powder diffraction is used to determine the temperature dependence of the magnetic structure in all four systems. Single-crystal inelastic neutron scattering is employed to investigate the temperature dependence of the Haldane-gap excitations and low-energy spin waves in the x=1 compound Nd{sub 2}BaNiO{sub 5}. The results of these experiments are discussed in the context of the {open_quotes}Haldane chain in a staggered field{close_quotes} model for R{sub 2}BaNiO{sub 5} systems, and quantitative agreement with theory is obtained. {copyright} {ital 1998} {ital The American Physical Society}

Authors:
; ; ;  [1];  [2]; ;  [3]; ;  [4]
  1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. DRFMC/SPSMS/MDN Centre dEtudes Nucleaires, 17 rue des Martyrs, 38054 Grenoble Cedex (France)
  3. NIST Center for Neutron Research, National Institute of Standards and Technology, Maryland 20899 (United States)
  4. Department of Physics, Aoyama-Gakuin University, 6-16-1, Chitosedai, Setagaya-ku Tokyo 157 (Japan)
Publication Date:
OSTI Identifier:
670224
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 58; Journal Issue: 21; Other Information: PBD: Dec 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NEODYMIUM COMPOUNDS; YTTRIUM COMPOUNDS; SPIN WAVES; EXCITATION; ANTIFERROMAGNETISM; ANTIFERROMAGNETIC MATERIALS; YTTRIUM OXIDES; NEODYMIUM OXIDES; NICKEL OXIDES; BARIUM OXIDES; MAGNETIC PROPERTIES; NEUTRON DIFFRACTION

Citation Formats

Yokoo, T, Raymond, S, Zheludev, A, Maslov, S, Ressouche, E, Zaliznyak, I, Erwin, R, Nakamura, M, and Akimitsu, J. Magnetic ordering, spin waves, and Haldane-gap excitations in (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} linear-chain mixed-spin antiferromagnets. United States: N. p., 1998. Web. doi:10.1103/PhysRevB.58.14424.
Yokoo, T, Raymond, S, Zheludev, A, Maslov, S, Ressouche, E, Zaliznyak, I, Erwin, R, Nakamura, M, & Akimitsu, J. Magnetic ordering, spin waves, and Haldane-gap excitations in (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} linear-chain mixed-spin antiferromagnets. United States. https://doi.org/10.1103/PhysRevB.58.14424
Yokoo, T, Raymond, S, Zheludev, A, Maslov, S, Ressouche, E, Zaliznyak, I, Erwin, R, Nakamura, M, and Akimitsu, J. 1998. "Magnetic ordering, spin waves, and Haldane-gap excitations in (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} linear-chain mixed-spin antiferromagnets". United States. https://doi.org/10.1103/PhysRevB.58.14424.
@article{osti_670224,
title = {Magnetic ordering, spin waves, and Haldane-gap excitations in (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} linear-chain mixed-spin antiferromagnets},
author = {Yokoo, T and Raymond, S and Zheludev, A and Maslov, S and Ressouche, E and Zaliznyak, I and Erwin, R and Nakamura, M and Akimitsu, J},
abstractNote = {Linear-chain nickelates with the composition (Nd{sub x}Y{sub 1{minus}x}){sub 2}BaNiO{sub 5} (x=1, x=0.75, x=0.5, and x=0.25) are studied in a series of neutron-scattering experiments. Powder diffraction is used to determine the temperature dependence of the magnetic structure in all four systems. Single-crystal inelastic neutron scattering is employed to investigate the temperature dependence of the Haldane-gap excitations and low-energy spin waves in the x=1 compound Nd{sub 2}BaNiO{sub 5}. The results of these experiments are discussed in the context of the {open_quotes}Haldane chain in a staggered field{close_quotes} model for R{sub 2}BaNiO{sub 5} systems, and quantitative agreement with theory is obtained. {copyright} {ital 1998} {ital The American Physical Society}},
doi = {10.1103/PhysRevB.58.14424},
url = {https://www.osti.gov/biblio/670224}, journal = {Physical Review, B: Condensed Matter},
number = 21,
volume = 58,
place = {United States},
year = {1998},
month = {12}
}