New substitutions and novel derivatives of the Aurivillius phases, Bi{sub 5}TiNbWO{sub 15} and Bi{sub 4}Ti{sub 3}O{sub 12}
Journal Article
·
· Materials Research Bulletin
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
We investigated isomorphous substitution of several metal atoms in the Aurivillius structures, Bi{sub 5}TiNbWO{sub 15} and Bi{sub 4}Ti{sub 3}O{sub 12}, in an effort to understand structure-property correlations. Our investigations have led to the synthesis of new derivatives, Bi{sub 4}LnTiMWO{sub 15} (Ln = La, Pr; M = Nb, Ta), as well as Bi{sub 4}PbNb{sub 2}WO{sub 15} and Bi{sub 3}LaPbNb{sub 2}WO{sub 15}, that largely retain the Aurivillius (n = 1) + (n = 2) intergrowth structure of the parent oxide Bi{sub 5}TiNbWO{sub 15}, but characteristically tend toward a centrosymmetric/tetragonal structure for the Ln-substituted derivatives. On the other hand, coupled substitution, 2Ti{sup IV} {sup {yields}} M{sup V} + Fe{sup III} in Bi{sub 4}Ti{sub 3}O{sub 12}, yields new Aurivillius phases, Bi{sub 4}Ti{sub 3-2x}Nb {sub x}Fe {sub x}O{sub 12} (x = 0.25, 0.50) and Bi{sub 4}Ti{sub 3-2x}Ta {sub x}Fe {sub x}O{sub 12} (x = 0.25) that retain the orthorhombic noncentrosymmetric structure of the parent Bi{sub 4}Ti{sub 3}O{sub 12}. Two new members of this family, Bi{sub 2}Sr{sub 2}Nb{sub 2}RuO{sub 12} and Bi{sub 2}SrNaNb{sub 2}RuO{sub 12} that are analogous to Bi{sub 2}Sr{sub 2}Nb{sub 2}TiO{sub 12}, possessing tetragonal (I4/mmm) Aurivillius structure have also been synthesized.
- OSTI ID:
- 21000641
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 5 Vol. 42; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetic and dielectric properties of Aurivillius phase Bi{sub 6}Fe{sub 2}Ti{sub 3−2x}Nb{sub x}Co{sub x}O{sub 18} (0 ≤ x ≤ 0.4)
Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5
Bi{sub 4}LnNb{sub 3}O{sub 15} (Ln = La, Pr, Nd) and Bi{sub 4}LaTa{sub 3}O{sub 15}: New intergrowth Aurivillius related phases
Journal Article
·
Sun Feb 09 23:00:00 EST 2014
· Applied Physics Letters
·
OSTI ID:22283152
Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5
Journal Article
·
Sun Jan 14 23:00:00 EST 2007
· Journal of Solid State Chemistry
·
OSTI ID:21015659
Bi{sub 4}LnNb{sub 3}O{sub 15} (Ln = La, Pr, Nd) and Bi{sub 4}LaTa{sub 3}O{sub 15}: New intergrowth Aurivillius related phases
Journal Article
·
Wed Jun 15 00:00:00 EDT 2005
· Materials Research Bulletin
·
OSTI ID:20889779