Growth and characterization of perovskite LaGaO3 crystals doped with Sr and Mn

Perovskite La1−x Sr x Ga1−y Mn y O3 solid solution crystals: Raman spectroscopy characterization

“…The crystals were grown under ambient pressure in a nitrogen atmosphere containing 1 vol% of oxygen, they were red/light brown for a low-Sr and -Mn doping level (x = y = 0.005, 0.01), dark for x = 0.02 and dark/black for a higher doping level (x = y [ 0.05) and have tendency to spiral growth. The tendency to spiral growth was decreased with increasing Mn content (x = 0.05, y = 0.06) [3].…”

“…PbTiO 3 ), high-T c superconducting films (e.g. YBa 2 Cu 3 O 7 ) and colossal magnetoresistive film epitaxy [1,2].…”

“…YBa 2 Cu 3 O 7 ) and colossal magnetoresistive film epitaxy [1,2]. Moreover, lanthanum gallate doped with Sr and Mg (LSGM) at A-and B-sites, respectively, has been widely investigated as electrolyte material for IT-SOFCs because of its high-oxide ion conductivity [3][4][5][6][7]. The symmetry of the crystal structure is strongly dependent on the concentration of dopants (Sr and Mg).…”

“…The LaGaO 3 crystal undergoes a structural phase transition at about 150°C from OR Pbnm to non-centrosymmetric high-temperature phase of RH R " 3c symmetry [5,11]. Recently, Glowacki et al [3] reported RT X-ray investigation of La 1-x Sr x Ga 1-y Mn y O 3 crystals. They have found that the structure of these crystals is described by OR Pbnm symmetry for x = y = 0, 0.02, 0.05 and x = 0.05, y = 0.06 compositions.…”

State of Chromium Atoms, Clustering, and Interatomic Interactions in Doped Lanthanum Gallate La(Sr)Ga(Cr,Mg)O3-δ

“…In the studies of conductivity much attention is being given to lanthanum gallates doped aside from strontium and magnesium with transition elements [4,27,34,35,[42][43][44][45][46][47][48][49][50][51][52][53][54]. In this case we deal with electron-ionic conductors, which are interesting not only from applied point of view, but also from the point of view of fundamental studies.…”