Anomalous Schottky specific heat and structural distortion in ferromagnetic PrAl2.
Phys Rev Lett
; 110(18): 186405, 2013 May 03.
Article
in En
| MEDLINE
| ID: mdl-23683228
ABSTRACT
Unique from other rare earth dialuminides, PrAl(2) undergoes a cubic to tetragonal distortion below T = 30 K in a zero magnetic field, but the system recovers its cubic symmetry upon the application of an external magnetic field of 10 kOe via a lifting of the 4f crystal field splitting. The nuclear Schottky specific heat in PrAl(2) is anomalously high compared to that of pure Pr metal. First principles calculations reveal that the 4f crystal field splitting in the tetragonally distorted phase of PrAl(2) underpins the observed unusual low temperature phenomena.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Praseodymium
/
Aluminum
/
Magnetics
Language:
En
Journal:
Phys Rev Lett
Year:
2013
Document type:
Article
Affiliation country:
Estados Unidos