TY - JOUR
T1 - Energetics and Crystal Chemical Systematic among Ilmenite, Lithium Niobate, and Perovskite Structures
AU - Navrotsky, Alexandra
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 1998/10
Y1 - 1998/10
N2 - Transitions from chain silicates to garnet, ilmenite, and perovskite structures are important in deep earth geophysics and solid-state chemistry. Titanates and other oxides also show polymorphism among ilmenite, lithium niobate (metastable), and perovskite structures. This review brings together the evidence from the recent mineralogical and materials science literature linking the crystal chemistry, thermodynamics, and occurrence of these polymorphs at high pressure and temperature. A-site ordered multicomponent titanate perovskites are also discussed. A common feature of the perovskite structure is its high vibrational entropy.
AB - Transitions from chain silicates to garnet, ilmenite, and perovskite structures are important in deep earth geophysics and solid-state chemistry. Titanates and other oxides also show polymorphism among ilmenite, lithium niobate (metastable), and perovskite structures. This review brings together the evidence from the recent mineralogical and materials science literature linking the crystal chemistry, thermodynamics, and occurrence of these polymorphs at high pressure and temperature. A-site ordered multicomponent titanate perovskites are also discussed. A common feature of the perovskite structure is its high vibrational entropy.
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U2 - 10.1021/cm9801901
DO - 10.1021/cm9801901
M3 - Review article
AN - SCOPUS:0000913337
SN - 0897-4756
VL - 10
SP - 2787
EP - 2793
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 10
ER -