Raman phonons in multiferroic FeVO4 crystals*
Zhang An-Mina), Liu Kaia), Ji Jian-Tinga), He Chang-Zhenb), Tian Yonga), Jin Fenga), Zhang Qing-Ming†a)
       
Atomic displacement patterns for selected Raman-active Ag modes of FeVO4. The index in each pattern corresponds to that listed in Table 1. 1–8: Bending modes between rigid polyhedron. 48–54: Stretching modes of V–O–Fe bonds.