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Title: Three-dimensional magnetic structures and rare-earth magnetic ordering in Nd sub 2 CuO sub 4 and Pr sub 2 CuO sub 4

Abstract

The three-dimensional (3D) magnetism present in Nd{sub 2}CuO{sub 4} and Pr{sub 2}CuO{sub 4} has been examined in neutron-scattering experiments. Antiferromagnetic long-range order of the Cu{sup 2+} moments develops below {ital T}{sub {ital N}}=255 K in both compounds. In Nd{sub 2}CuO{sub 4} a series of magnetic phase transitions in which the Cu{sup 2+} spins reorient has also been observed below {ital T}{sub {ital N}}, while in Pr{sub 2}CuO{sub 4} the 3D Cu{sup 2+} spin structure is stable. No changes in the crystalline structure of Nd{sub 2}CuO{sub 4} associated with the spin-reorientation transitions were found. Induced ordering of the rare-earth magnetic moments has been observed in both compounds. The Nd{sup 3+} (Pr{sup 3+}) magnetic moments align parallel (antiparallel) to Cu{sup 2+} moments which are nearest neighbors along the {ital c} axis, and the ordered moments of the rare-earth ions were determined to be {similar to}1.3{mu}{sub {ital B}} for Nd{sup 3+} at 0.4 K and {similar to}0.08{mu}{sub {ital B}} for Pr{sup 3+} at 8 K. The temperature-dependent Pr{sup 3+} moment is shown to be proportional to the Cu{sup 2+} moment times the bulk susceptibility. In this paper we also discuss the role of the {ital XY} anisotropy in the 3D ordering.

Authors:
; ; ; ; ;  [1];  [2]; ;  [3]; ; ;  [4]
  1. Department of Physics, Tohoku University, Aoba-ku, Sendai 980 (Japan)
  2. Nippon Telegraph and Telephone Opto-Electronics Laboratories, Nippon Telegraph and Telephone Corporation, Tokai, Ibaraki 319-11 (Japan)
  3. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA (USA)
  4. Physics Department, Brookhaven National Laboratory, Upton, NY (USA)
Publication Date:
OSTI Identifier:
5777501
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (USA)
Additional Journal Information:
Journal Volume: 42:16; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NEODYMIUM OXIDES; MAGNETIC PROPERTIES; PRASEODYMIUM OXIDES; ANTIFERROMAGNETISM; HEAT TREATMENTS; LOW TEMPERATURE; MONOCRYSTALS; NEUTRON DIFFRACTION; PHASE TRANSFORMATIONS; SPIN ORIENTATION; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; CHALCOGENIDES; COHERENT SCATTERING; CRYSTALS; DIFFRACTION; MAGNETISM; NEODYMIUM COMPOUNDS; ORIENTATION; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; 360204* - Ceramics, Cermets, & Refractories- Physical Properties

Citation Formats

Matsuda, M, Yamada, K, Kakurai, K, Kadowaki, H, Thurston, T R, Endoh, Y, Hidaka, Y, Birgeneau, R J, Kastner, M A, Gehring, P M, Moudden, A H, and Shirane, G. Three-dimensional magnetic structures and rare-earth magnetic ordering in Nd sub 2 CuO sub 4 and Pr sub 2 CuO sub 4. United States: N. p., 1990. Web. doi:10.1103/PhysRevB.42.10098.
Matsuda, M, Yamada, K, Kakurai, K, Kadowaki, H, Thurston, T R, Endoh, Y, Hidaka, Y, Birgeneau, R J, Kastner, M A, Gehring, P M, Moudden, A H, & Shirane, G. Three-dimensional magnetic structures and rare-earth magnetic ordering in Nd sub 2 CuO sub 4 and Pr sub 2 CuO sub 4. United States. doi:10.1103/PhysRevB.42.10098.
Matsuda, M, Yamada, K, Kakurai, K, Kadowaki, H, Thurston, T R, Endoh, Y, Hidaka, Y, Birgeneau, R J, Kastner, M A, Gehring, P M, Moudden, A H, and Shirane, G. Sat . "Three-dimensional magnetic structures and rare-earth magnetic ordering in Nd sub 2 CuO sub 4 and Pr sub 2 CuO sub 4". United States. doi:10.1103/PhysRevB.42.10098.
@article{osti_5777501,
title = {Three-dimensional magnetic structures and rare-earth magnetic ordering in Nd sub 2 CuO sub 4 and Pr sub 2 CuO sub 4},
author = {Matsuda, M and Yamada, K and Kakurai, K and Kadowaki, H and Thurston, T R and Endoh, Y and Hidaka, Y and Birgeneau, R J and Kastner, M A and Gehring, P M and Moudden, A H and Shirane, G},
abstractNote = {The three-dimensional (3D) magnetism present in Nd{sub 2}CuO{sub 4} and Pr{sub 2}CuO{sub 4} has been examined in neutron-scattering experiments. Antiferromagnetic long-range order of the Cu{sup 2+} moments develops below {ital T}{sub {ital N}}=255 K in both compounds. In Nd{sub 2}CuO{sub 4} a series of magnetic phase transitions in which the Cu{sup 2+} spins reorient has also been observed below {ital T}{sub {ital N}}, while in Pr{sub 2}CuO{sub 4} the 3D Cu{sup 2+} spin structure is stable. No changes in the crystalline structure of Nd{sub 2}CuO{sub 4} associated with the spin-reorientation transitions were found. Induced ordering of the rare-earth magnetic moments has been observed in both compounds. The Nd{sup 3+} (Pr{sup 3+}) magnetic moments align parallel (antiparallel) to Cu{sup 2+} moments which are nearest neighbors along the {ital c} axis, and the ordered moments of the rare-earth ions were determined to be {similar to}1.3{mu}{sub {ital B}} for Nd{sup 3+} at 0.4 K and {similar to}0.08{mu}{sub {ital B}} for Pr{sup 3+} at 8 K. The temperature-dependent Pr{sup 3+} moment is shown to be proportional to the Cu{sup 2+} moment times the bulk susceptibility. In this paper we also discuss the role of the {ital XY} anisotropy in the 3D ordering.},
doi = {10.1103/PhysRevB.42.10098},
journal = {Physical Review, B: Condensed Matter; (USA)},
issn = {0163-1829},
number = ,
volume = 42:16,
place = {United States},
year = {1990},
month = {12}
}