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Title: Magnetic phase transitions in Nd sub 2 CuO sub 4

Abstract

Polarized and unpolarized neutron scattering techniques along with x-ray diffraction have been used to study the magnetic and structural properties of a single crystal of Nd{sub 2}CuO{sub 4}. Long-range magnetic order of the Cu moments develops at {ital T}{sub {ital N}}=245 K, with a simple antiferromagnetic configuration of spins as found in La{sub 2}NiO{sub 4}, while the spin directions may be either collinear or noncollinear. Additional abrupt transitions are observed at 75 and 30 K, in which spin reorientations take place. Bragg peaks associated with the crystal structure are found at the same positions as the magnetic Bragg peaks, and indicate that a small distortion of the basic tetragonal structure has occurred above 300 K. At low temperatures the Nd moments also order antiferromagnetically ({ital T}{sub {ital N}}=1.5 K), while an additional transition of a continuous nature is observed at 150 mK.

Authors:
; ; ; ; ;  [1];  [2];  [3]
  1. Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland 20742 (USA) National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (USA)
  2. MS K764, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)
  3. MS K764, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA) Department of Physics, University of California-Los Angeles, Los Angeles, California 90024 (USA)
Publication Date:
OSTI Identifier:
7122645
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics; (USA)
Additional Journal Information:
Journal Volume: 67:9; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COPPER OXIDES; CRYSTAL STRUCTURE; MAGNETIC PROPERTIES; NEODYMIUM OXIDES; ANTIFERROMAGNETISM; LOW TEMPERATURE; MONOCRYSTALS; NEUTRON DIFFRACTION; PHASE TRANSFORMATIONS; POLARIZATION; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; X-RAY DIFFRACTION; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTALS; DIFFRACTION; MAGNETISM; NEODYMIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties

Citation Formats

Skanthakumar, S, Zhang, H, Clinton, T W, Sumarlin, I W, Li, W, Lynn, J W, Fisk, Z, and Cheong, S. Magnetic phase transitions in Nd sub 2 CuO sub 4. United States: N. p., 1990. Web. doi:10.1063/1.344859.
Skanthakumar, S, Zhang, H, Clinton, T W, Sumarlin, I W, Li, W, Lynn, J W, Fisk, Z, & Cheong, S. Magnetic phase transitions in Nd sub 2 CuO sub 4. United States. doi:10.1063/1.344859.
Skanthakumar, S, Zhang, H, Clinton, T W, Sumarlin, I W, Li, W, Lynn, J W, Fisk, Z, and Cheong, S. Tue . "Magnetic phase transitions in Nd sub 2 CuO sub 4". United States. doi:10.1063/1.344859.
@article{osti_7122645,
title = {Magnetic phase transitions in Nd sub 2 CuO sub 4},
author = {Skanthakumar, S and Zhang, H and Clinton, T W and Sumarlin, I W and Li, W and Lynn, J W and Fisk, Z and Cheong, S},
abstractNote = {Polarized and unpolarized neutron scattering techniques along with x-ray diffraction have been used to study the magnetic and structural properties of a single crystal of Nd{sub 2}CuO{sub 4}. Long-range magnetic order of the Cu moments develops at {ital T}{sub {ital N}}=245 K, with a simple antiferromagnetic configuration of spins as found in La{sub 2}NiO{sub 4}, while the spin directions may be either collinear or noncollinear. Additional abrupt transitions are observed at 75 and 30 K, in which spin reorientations take place. Bragg peaks associated with the crystal structure are found at the same positions as the magnetic Bragg peaks, and indicate that a small distortion of the basic tetragonal structure has occurred above 300 K. At low temperatures the Nd moments also order antiferromagnetically ({ital T}{sub {ital N}}=1.5 K), while an additional transition of a continuous nature is observed at 150 mK.},
doi = {10.1063/1.344859},
journal = {Journal of Applied Physics; (USA)},
issn = {0021-8979},
number = ,
volume = 67:9,
place = {United States},
year = {1990},
month = {5}
}