Research Project
Grant-in-Aid for Research Activity Start-up
Ultrasonic measurements on PrMg3 reveals that the magnetic field dependence of elastic constant (C11-C12)/2 shows strong magnetic anisotropy. We obtained small Gruneisen constant of 5 for PrMg3 at low temperatures from low-temperature thermal expansion measurements. This result implies that PrMg3 has sermonic quasiparticles with small density of states. We have also performed specific heat and magnetization measurements on PrV2Al20. Our measurements reveals that PrV2Al20 exhibits two-phase transition at TQ = 0.73 K and T* = 0.61 K at zero field. We describe a T-H phase diagram in the three principal directions. It should be emphasized that high field phase exists in only [100] field direction. We proposed that the high field phase is due to the switching from the electric quadrupole O20 phase to O22 phase assisted by the octupole moment.
All 2014 2013 2012 Other
All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (20 results) Remarks (3 results)
J. Phys. Soc. Jpn.
Volume: 83 Issue: 4 Pages: 044603-044603
10.7566/jpsj.83.044603
Journal of Physical Society of Japan
Volume: 83 Issue: 3 Pages: 33707-33707
10.7566/jpsj.83.033707
http://sakaki.issp.u-tokyo.ac.jp
http://sakaki.issp.u-tokyo.ac.jp/
