| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Research Abstract |
The effects of multipolar interaction for the magnetic properties of cubic compounds RPd_3S_4(R : rare-earth metals) whose crystal structures have no four-fold axis have been examined by performing magnetization, electrical resistivity and specific-heat measurements and neutron-scattering experiments. Following are the results of this study.
(1) TbPd_3S_4 shows magnetic-field induced antiferroquadrupolar ordering.
(2) The origin for the first-order like antiferromagnetic transitions in SmPd_3S_4 and TbPd_3S_4 is the competition between the magnetic interaction and multipolar interaction.
(3) Possible order parameter of the phase transition in PrPd_3S_4 is not magnetic octupole but magnetic dipole.
(4) New tetragonal compounds LnRu_2X_2B(Ln=Ce, Pr, Nd、X=Al, Ga) were synthesized. These compounds show ferromagnetic transitions at rather high temperatures of approximately 10 K.
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