Antiferromagnetism and oxygen deficiency in single-crystal La/sub 2/CuO/sub 4-//sub delta/

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.826· OSTI ID:6047132

Freltoft, T; Remeika, J P; Moncton, D E; Cooper, A S; Fischer, J E; Harshman, D; Shirane, G; Sinha, S K; Vaknin, D

Two single crystals of undoped La/sub 2/CuO/sub 4/ are studied by neutron diffraction between T = 5 and 300 K. In one crystal oxygen vacancies are created by heat treatment and the magnetic properties are found to depend strongly on this treatment. While the untreated sample is found to order antiferromagnetically at T/sub N/approx. =50 K, the heat-treated crystal orders at T/sub N/approx. =150 K with a somewhat larger moment. The magnetic structure is the same for the two crystals and supports previously reported powder results.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6047132
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANTIFERROMAGNETISM
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
ELEMENTS
HEAT TREATMENTS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LOW TEMPERATURE
MAGNETIC MOMENTS
MAGNETISM
MEDIUM TEMPERATURE
MONOCRYSTALS
NEUTRON DIFFRACTION
NONMETALS
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POINT DEFECTS
RARE EARTH COMPOUNDS
SCATTERING
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VACANCIES
VERY LOW TEMPERATURE