The pressure effect on the enhanced itinerant paramagnetism of Ni<sub>3</sub>Al and TiCo compounds
P E Brommer; G E Grechnev; J J M Franse; A S Panfilov; Yu Ya Pushkar; I V Svechkarev; P E Brommer; Van der Waals-Zeeman Lab., Amsterdam Univ., Netherlands; G E Grechnev; Van der Waals-Zeeman Lab., Amsterdam Univ., Netherlands; J J M Franse; Van der Waals-Zeeman Lab., Amsterdam Univ., Netherlands; A S Panfilov; Van der Waals-Zeeman Lab., Amsterdam Univ., Netherlands; Yu Ya Pushkar; Van der Waals-Zeeman Lab., Amsterdam Univ., Netherlands; I V Svechkarev; Van der Waals-Zeeman Lab., Amsterdam Univ., Netherlands
Журнал:
Journal of Physics: Condensed Matter
Дата:
1995-04-17
Аннотация:
The pressure effect on the magnetic susceptibility of Ni<sub>3</sub>Al and TiCo compounds is studied in the temperature range 20-293 K. The obtained magnetovolume effect values dln chi /dlnV and results of detailed theoretical calculations of density of states at the Fermi level as a function of the lattice constant were used to evaluate volume derivatives of the electron-electron interaction parameter J: dlnJ/dlnV=-0.9+or-0.15 (Ni<sub>3</sub>Al) and -0.95+or-0.15 (TiCo). These results are compared with theoretical estimates of dlnJ/dlnV from ab initio LMTO band structure calculations.
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