Magnetic and structural features of thin tantalum films with a fivefold symmetry axis
Trubachev V. G., Tovstolytkin A. I., Shpak A. P.
Structural and magnetic properties of thin films formed from an ensemble of tantalum clusters with a fivefold symmetry axis have been studied in fields up to 200 Oe. The magnetic response of pentagonal tantalum clusters is sharply higher than that of bulk tantalum. A shift of the hysteresis loop characteristic of complex noncollinear magnetic materials is observed at T=5 К after the films are cooled in an external magnetic field. It is suggested that the anomalies observed in the magnetic properties are due to the icosahedral symmetry of the clusters.