Magnetic ordering in (Y sub 1-x Pr sub x )Ba sub 2 Cu sub 3 O sub 7 as evidenced by muon spin relaxation

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5457220

Cooke, D W; Kwok, R S; Jahan, M S; Lichti, R L; Adams, T D; Boekema, C; Dawson, W D; Kebede, A; Schwegler, J; Crow, J E ^[1]

---

1. Los Alamos National Lab., NM (USA)

Using the zero-field-muon-spin-relaxation ({mu}SR) technique we have found clear evidence for antiferromagnetic ordering of Cu moments within the CuO planes of (Y{sub 1-x}Pr{sub x})Ba{sub 2}Cu{sub 3}O{sub 7}. The Neel temperatures are approximately 285 K, 220 K, 35 K, 30 K, and 20 K for x = 1, 0.8, 0.6, 0.58, and 0.54, respectively. For x = 0.50 we observe a fast-relaxing component of the muon polarization in addition to a long-time tail, reminiscent of spin-glass behavior. This region of the phase diagram (0.5{le}x{le}0.54) corresponds to the existence of both superconductivity and magnetism. The fully developed local magnetic field for x>0.54 is found to be {approximately}16 mT, but decreased to {approximately}12 mT at T = 17 K for the x = 1 sample, presumably due to the onset of Pr-ion ordering. Magnetic ordering also occurs in PrBa{sub 2}Cu{sub 3}O{sub 6}; the Neel temperature is {approximately}325 K. 7 refs., 4 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5457220
• Report Number(s): LA-UR-89-3380; CONF-891117--7; ON: DE90002393
• 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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MUON SPIN RELAXATION
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RELAXATION
SPIN ORIENTATION
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS