2000 - 2004 2 2010 - 2014 1

soft mode 3 A2BX4-type crystal 1 acoustic and optical branch 1 anticrossing 1 dispersion relation 1 double-minimum potential 1 dynamic susceptibility 1 ferroelectric phase transition 1 incommensurate transition 1 over-damped 1 phonon spectrum 1 proton tunnel 1 two-sublattice model 1

学術雑誌論文 3

大学院理工学研究科（理学） 3

増山 博行 3 重松 宏武 1