| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2019: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
|
|---|
| Outline of Final Research Achievements |
In this study, we performed Al-NMR, magnetization and specific heat measurements on the caged compound PrTi2Al20, which contains non-Kramers trivalent Pr ions. We obtained a ferro-quadrupole phase diagram, which is anisotropic with respect to the magnetic field. In particular, we found discontinuous switching of the ferro-quadrupole order parameter induced by weak magnetic fields around 2 tesla along [001] and [110] directions. We proposed a physical mechanism by using a phenomenological Landau theory and model calculations, assuming competition between the magnetic Zeeman energy and the anisotropic quadrupole interactions. We also performed oxygen NMR measurements on the double perovskite compound Ba2MgReO6 and obtained sufficient data to determine the multipole order parameters of the 5d electron system.
|
