1. Prospects of quantum phase transition in Ce(Fe1−xNix)2 compounds.
- Author
-
Das, Rakesh and Srivastava, S.K.
- Subjects
- *
QUANTUM phase transitions , *FERROMAGNETISM , *PARAMAGNETISM , *PHOTOELECTRON spectroscopy , *NICKEL , *ORBITAL hybridization , *SEMICONDUCTOR doping - Abstract
We report a study on the competition between soft ferromagnetism (FM) and enhanced Pauli paramagnetism (PM) in Ce(Fe 1− x Ni x ) 2 ( x =0.0, 0.5, 0.8) compounds under doping. We provide convincing experimental evidence for the occurrence of a ferromagnetic (FM) phase and a paramagnetic (PM) phase at different concentrations. The quality of the samples was established by X-ray diffraction and X-ray photoelectron spectroscopy. Quantification of f - d hybridization was made from high-resolution X-ray photoelectron spectroscopy. A proportionality was found between ‘ x ' dependencies of fall of f - d hybridization strength and magnetic order. A prediction that a quantum critical point may exist at a nickel concentration x close to 0.69 can be made from the extrapolation of x dependent Curie temperature (T c ) plot. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF