TY - JOUR
T1 - CRYSTAL-STRUCTURE OF THE LI+ ION-CONDUCTING PHASES, LI-0.5-3X RE(0.5+X) TIO3 - RE=PR, ND, X-APPROXIMATE-TO-0.05
T2 - RE = Pr, Nd; x ≈ 0.05
AU - Skakle, Janet M.S.
AU - Mather, Glenn C.
AU - Morales, Manuel
AU - Smith, Ronald I.
AU - West, Anthony R.
PY - 1995/11
Y1 - 1995/11
N2 - The crystal structure of the C polymorph of the solid solutions, Li(0.5-3x)RE(0.5+x) TiO3 (RE = Pr, Nd) determined from powder neutron diffraction using Rietveld refinement, is an ordered perovskite of the GdFeO3 type, The structures of both phases are similar: the A sites contain (0.5+x) RE cations and (0.5-3x) off-centre lithium ions, with 2x sites vacant. Orthorhombic unit cell, RE = Nd: a = 5.43661 (7) Angstrom, b = 7.6647(1) Angstrom, c = 5.39752(7) Angstrom; RE = Pr: a = 5.43793(5) Angstrom, b = 7.66828(8) Angstrom, c = 5.40769(5) Angstrom; space group Pnma (no. 62), Conduction occurs by a Li+ vacancy mechanism through interconnecting A sites, avoiding those sites that are occupied by the RE cations.
AB - The crystal structure of the C polymorph of the solid solutions, Li(0.5-3x)RE(0.5+x) TiO3 (RE = Pr, Nd) determined from powder neutron diffraction using Rietveld refinement, is an ordered perovskite of the GdFeO3 type, The structures of both phases are similar: the A sites contain (0.5+x) RE cations and (0.5-3x) off-centre lithium ions, with 2x sites vacant. Orthorhombic unit cell, RE = Nd: a = 5.43661 (7) Angstrom, b = 7.6647(1) Angstrom, c = 5.39752(7) Angstrom; RE = Pr: a = 5.43793(5) Angstrom, b = 7.66828(8) Angstrom, c = 5.40769(5) Angstrom; space group Pnma (no. 62), Conduction occurs by a Li+ vacancy mechanism through interconnecting A sites, avoiding those sites that are occupied by the RE cations.
UR - http://www.scopus.com/inward/record.url?scp=0001626418&partnerID=8YFLogxK
U2 - 10.1039/JM9950501807
DO - 10.1039/JM9950501807
M3 - Article
AN - SCOPUS:0001626418
SN - 0959-9428
VL - 5
SP - 1807
EP - 1808
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
IS - 11
ER -