Antiferromagnetic order of the Cu in RBa/sub 2/Cu/sub 3/O/sub 6+x/. [R = rare earth or Nd]

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6842976

Lynn, J W; Li, W H; Mook, H A; Sales, B C; Fisk, Z

Neutron diffraction measurements have been taken on single crystals of RBa/sub 2/Cu/sub 3/O/sub 6+x/ (R = rare earth, or Nd) to explore the nature of the magnetic order as a function of oxygen concentration x. The Cu-O planes order antiferromagnetically at T/sub N1/, with T/sub N1/(x approx. O) /approximately/ 450/degree/K. At lower temperatures the oxygen-deficient Cu planes also order magnetically, with a substantial low temperature moment (/approximately/ 1/2 ..mu../sub B/) and a simple antiferromagnetic sequencing along the c-axis. Both ordering temperatures decrease with increasing x, with T/sub N2/ being much more sensitive to x than T/sub N1/. 6 refs., 2 figs.

• Research Organization: Oak Ridge National Lab., TN (USA); Los Alamos National Lab., NM (USA)
• DOE Contract Number: AC05-84OR21400; W-7405-ENG-48
• OSTI ID: 6842976
• Report Number(s): CONF-880705-8; ON: DE88015553
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
MAGNETISM
MONOCRYSTALS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS