Magnetic structure of NpPd{sub 2}Al{sub 3}: Relevance to the coexistence of superconductivity and magnetism in UPd{sub 2}Al{sub 3}

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.1138· OSTI ID:475289

Hiess, A ^[1]; Bourdarot, F; Burlet, P; Ressouche, E; Sanchez, J ^[2]; Wastin, F; Rebizant, J; Lander, G H ^[1]; Suard, E ^[3]

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1. European Commission, JRC, Institute for Transuranium Elements, Postfach 2340, D-76125 Karlsruhe (Germany)
2. Departement de Recherche Fondamentale sur la Matiere Condensee, CEA-Grenoble, F-38054 Grenoble Cedex 9 (France)
3. Institut Laue-Langevin, Boite Postale 156, F-38042 Grenoble Cedex 9 (France)

We report neutron-diffraction experiments to determine the low-temperature magnetic structure of NpPd{sub 2}Al{sub 3}, the isostructural Np analog of the heavy-fermion superconductor UPd{sub 2}Al{sub 3}. The systems orders initially at about 40 K with an incommensurate magnetic propagation vector {bold q}=. (1/3,1/3, 0.36). Below 25 K the intensity of this phase is reduced and a new commensurate magnetic phase with {bold q}=(1/3,1/3,1/2) is observed as the dominant phase. The fact that we observe two magnetic phases in this system may have relevance to understanding the ground state in UPd{sub 2}Al{sub 3}. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 475289
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 55; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
CRYSTAL STRUCTURE
INTERMETALLIC COMPOUNDS
KONDO EFFECT
MAGNETIC PROPERTIES
NEPTUNIUM ALLOYS
NEUTRON DIFFRACTION
PALLADIUM ALLOYS
PHASE TRANSFORMATIONS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
URANIUM ALLOYS
commensurate-incommensurate transformations