Observation of Pr magnetic order in PrBa{sub 2}Cu{sub 3}O{sub 7}

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.R3406· OSTI ID:450408

Skanthakumar, S; Lynn, J W ^[1]; Rosov, N ^[1]; Cao, G; Crow, J E ^[2]

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1. Reactor Radiation Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
2. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310 (United States)

Neutron-diffraction experiments have been carried out to investigate the magnetic order in PrBa{sub 2}Cu{sub 3}O{sub 7}. Our neutron data indicate that the Cu spins order above 300 K. This ordering is not significantly affected at low temperatures, where new magnetic Bragg peaks develop below 17 K that must be associated with the antiferromagnetic ordering of Pr spins, with an ordered moment of 0.79(5){mu}{sub B}. This rules out the possibility recently proposed by Nehrke and Pieper [Phys. Rev. Lett. {bold 76}, 1936 (1996)] that the new magnetic Bragg peaks arise from a spin reorientation of the Cu spins and that the Pr carries essentially no moment. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 450408
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 55; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANTIFERROMAGNETISM
BARIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
MAGNETIC PROPERTIES
NEUTRON DIFFRACTION
PHASE TRANSFORMATIONS
PRASEODYMIUM OXIDES
SPIN ORIENTATION
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K