A new anhydrous bismuth potassium nitrate, K3Bi2(NO3)9: Synthesis, structure characterization and thermal decomposition

Bi0.5K0.5TiO3–CaTiO3 ceramics: Appearance of the pseudocubic structure and ferroelectric‐relaxor transition characters

“…Figure plots the t values versus the molar fraction of CT in the BKT‐CT, BNT‐CT, and BT‐CT systems. The radius of Bi 3+ for 12‐fold coordination is referenced by Goaz et al, and the radii of other ions are referenced by Shannon . A tetragonal structure is favored when the t value is larger than 1 .…”

Current Understanding of Structure–Processing–Property Relationships in BaTiO3–Bi(M)O3 Dielectrics

“…Furthermore, it has been shown that, in NBT, the direction of the Bi 3+ displacement will reorient to align with an applied electric field . Generally, behavior of the Bi 3+ cation is attributed to its relatively small ionic radius (1.31 Å) compared to other A ‐site cations like Ba 2+ (1.61 Å) or Pb 2+ (1.49 Å) …”

“…46 Generally, behavior of the Bi 3+ cation is attributed to its relatively small ionic radius (1.31 Å) compared to other A-site cations like Ba 2+ (1.61 Å) or Pb 2+ (1.49 Å). 47,48 When BT is modified with a sufficient amount of Bi(M)O 3 , a pseudocubic structure is observed; this transition typically occurs when the mole fraction of Bi(M)O 3 is between 0.05 and 0.15. 27,36,[49][50][51][52][53][54][55][56] In the literature both "cubic" and "pseudocubic" are used to describe the BT-Bi(M)O 3 phase, and in this section it will be evidenced that pseudocubic is the more appropriate term.…”

Crystal structure of Ag3Dy2(NO3)9 and quantitative comparison to isotypic compounds

“…Double nitrates of alkali metals and lanthanides of the composition A 3 Ln 2 (NO 3 ) 9 have been found to crystallize in the chiral space groups P4 1 32 and P4 3 32 (Wickleder, 2002). After the first finding of K 3 Pr 2 (NO 3 ) 9 by Carnall et al (1973), this structure type has been observed in several compounds, to date with K (Carnall et al, 1973;Vigdorchik et al, 1992;Guillou et al, 1995;Gobichon et al, 1999), Rb (Vigdorchik et al, 1990;Manek & Meyer, 1993a;Guillou et al, 1996), and NH 4 (Manek & Meyer, 1992) as 'A 0 cations for the lighter lanthanides La-Sm, and also detached examples with Na at the 'A 0 site (Stockhause & Meyer, 1997;Luo & Corruccini, 2004) and Eu (Manek & Meyer, 1992), Gd (Manek & Meyer, 1992;Luo & Corruccini, 2004), and even Bi (Goaz et al, 2012) at the lanthanide site have been reported. The compounds are typically synthesized by dissolving the lanthanide oxides or nitrates in melts of the respective alkali metal or ammonium nitrates under anhydrous atmosphere, while lanthanum and cerium compounds have been crystallized from solutions in H 2 O or HNO 3 (Guillou et al, 1995(Guillou et al, , 1996Gobichon et al, 1999).…”

“…Obviously, all of them seem to crystallize in the abovementioned structure type, however, for some of them only the cubic lattice parameter is given. To date, detailed structural data are available for K 3 La 2 (NO 3 ) 9 (Gobichon et al, 1999), K 3 Ce 2 (NO 3 ) 9 (Guillou et al, 1995), Rb 3 Ce 2 (NO 3 ) 9 (Guillou et al, 1996), K 3 Pr 2 (NO 3 ) 9 (Carnall et al, 1973), Rb 3 Pr 2 (NO 3 ) 9 (Manek & Meyer, 1993a), (NH 4 ) 3 Pr 2 (NO 3 ) 9 (Manek & Meyer, 1992), Na 3 Nd 2 (NO 3 ) 9 (Stockhause & Meyer, 1997), K 3 Nd 2 (NO 3 ) 9 (Vigdorchik et al, 1992), Rb 3 Nd 2 (NO 3 ) 9 (Vigdorchik et al, 1990), and K 3 Bi 2 (NO 3 ) 9 (Goaz et al, 2012).…”