Your browser doesn't support javascript.
loading
Tricritical point from high-field magnetoelastic and metamagnetic effects in UN.
Shrestha, K; Antonio, D; Jaime, M; Harrison, N; Mast, D S; Safarik, D; Durakiewicz, T; Griveau, J-C; Gofryk, K.
Afiliación
  • Shrestha K; Idaho National Laboratory, Idaho Falls, Idaho, 83402, USA.
  • Antonio D; Idaho National Laboratory, Idaho Falls, Idaho, 83402, USA.
  • Jaime M; Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
  • Harrison N; Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
  • Mast DS; Idaho National Laboratory, Idaho Falls, Idaho, 83402, USA.
  • Safarik D; Department of Chemistry and Biochemistry & High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Nevada, 89154, USA.
  • Durakiewicz T; Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
  • Griveau JC; Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
  • Gofryk K; Institute of Physics, Maria Curie-Sklodowska University, 20-031, Lublin, Poland.
Sci Rep ; 7(1): 6642, 2017 07 26.
Article en En | MEDLINE | ID: mdl-28747795
Uranium nitride (UN) is one of the most studied actinide materials as it is a promising fuel for the next generation of nuclear reactors. Despite large experimental and theoretical efforts, some of the fundamental questions such as degree of 5 f-electron localization/delocalization and its relationship to magneto-vibrational properties are not resolved yet. Here we show that the magnetostriction of UN measured in pulsed magnetic fields up to 65 T and below the Néel temperature is large and exhibits complex behavior with two transitions. While the high field anomaly is a field-induced metamagnetic-like transition and affects both magnetisation and magnetostriction, the low field anomaly does not contribute to the magnetic susceptibility. Our data suggest a change in the nature of the metamagnetic transition from first to second order-like at a tricritical point at T tri ∼ 24 K and H tri ∼ 52 T. The induced magnetic moment at 60 T might suggest that only one subset of magnetic moments has aligned along the field direction. Using the results obtained here we have constructed a magnetic phase diagram of UN. These studies demonstrate that dilatometry in high fields is an effective method to investigate the magneto-structural coupling in actinide materials.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido