The Crystal Structure of Sr2TiSi2O8

Effects of mesoporous silica addition on thermoelectric properties of Nb-doped SrTiO3

“…Tetragonal Sr 2 TiSi 2 O 8 with the 5D superspace group P4bm (−˛,˛,1/2;˛,˛,1/2,˛= 0.3) [22] has a more complex unit cell than SrTiO 3 with space group Pm3m [23], indicating that Sr 2 TiSi 2 O 8 should have a much lower lattice thermal conductivity than SrTiO 3 . Fig.…”

Low-temperature structural phase transition and incommensurate lattice modulation in the spin-gap compoundBaCuSi2O6

“…Such modulations are usually due to a displacive phase transition of the lattice involving rotations of SiO 4 tetrahedra without substantial internal distortions of the tetrahedra themselves [9,10,11]. BaCuSi 2 O 6 can be thought of as a 'vierer' single ring cyclosilicate [12], in which isolated Si 4 O 12 rings (composed of 4 corner sharing SiO 4 tetrahedra) are linked by CuO 4 groups in the ab-plane, and separated by Ba cations between successive layers.…”

Bulk crystallisation of (00l) oriented fresnoite Sr2TiSi2O8 in glass-ceramics of the Sr–Ti–Si–K–B–O system

“…The crystalline phase fresnoite, Sr 2 TiSi 2 O 8 , is known as non ferroelectric, pyroelectric and piezoelectric [1][2][3]. Fresnoite crystallises in the tetragonal system according to Space Group P4bm with a = 8.3218 Å and c = 5.0292 Å [4].…”