Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
? ? ? ? YbNi2 (Magnetic Behavior of the Nanophase of YbNi2 Alloy)
Year:2017
Research Areas
  • Magnetism
Information
Abstract
We report changes of magnetic properties of the heavy-fermion YbNi2 crystalline alloy when submitted to high-energy ball milling. Due to milling process, the ferromagnetic transition at TC =10.4 K in bulk alloy practically disappears and an upturn ongoing to lower temperatures indicates the existence of a magnetic transition at T*= 3.2 K in the nanometric sample. The Orbach-Aminov spin-lattice relaxation processes with the involvement of the first excited crystalline electric field level of Yb3+ at 75 K dominate the electron spin dynamics in the paramagnetic phase of the bulk. For T < TC, a comparative study of the temperature dependent magnetic properties and electron spin resonance parameters of nano and bulk samples shows a shift of the electron spin resonance field positions strongly towards high fields related to the magnetic inhomogeneity of the alloy induced by the milling process.
International
Si
JCR
Si
Title
Fizika Metallov I Metallovedenie
ISBN
0015-3230
Impact factor JCR
Impact info
Volume
118
10.7868/S0015323017040040
Journal number
4
From page
359
To page
363
Month
ABRIL
Ranking
Participants
  • Autor: Daniel Rojas Pupo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Acústica Arquitectónica
  • Departamento: Estructuras y Física de Edificación
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)