Structure and ionic conductivity of MLaNb2O7 (M  K, Na, Li, H)

Sato, Mineo; Abo, J.; Jin, Tetsuro; Ohta, Masatoshi

doi:10.1016/0925-8388(93)90192-p

Cited by 82 publications

(93 citation statements)

References 8 publications

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“…It is known in many Dion-Jacobson-type layer perovskites that alkali-metal cation mobilities within the hosts are greater for the smaller alkali metals and hence correlate highly with the reaction time [5,7,8]. This tendency is consistent with what happened in (CuCl)Ca 2 Ta 3 O 10 , but not in (FeCl)Ca 2 Ta 3 O 10 .…”

Section: Resultssupporting

confidence: 77%

New magnetic materials obtained by ion-exchange reactions from non-magnetic layered perovskites

Kageyama¹,

Viciu²,

Caruntu³

et al. 2004

J. Phys.: Condens. Matter

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New layered magnetic materials, (MCl)Ca 2 Ta 3 O 10 (M = Cu, Fe), have been prepared by ion-exchange reactions of non-magnetic perovskite derivatives, ACa 2 Ta 3 O 10 (A = Rb, Li), in corresponding anhydrous molten salts. Powder x-ray diffraction patterns of the products are successfully indexed assuming tetragonal symmetry with cell dimensions a = 3.829 Å and c = 15.533 Å for Cu, and a = 3.822 Å and c = 15.672 Å for Fe. Being separated by the Ca 2 Ta 3 O 10 triple-layer perovskite slabs, the transition-metal chloride (MCl) network provides a two-dimensional magnetic lattice. Magnetic susceptibility measurements show that (CuCl)Ca 2 Ta 3 O 10 is in an antiferromagnetic state below 8 K, while (FeCl)Ca 2 Ta 3 O 10 has two anomalies at 91 and 125 K, suggesting successive phase transitions due to geometrical spin frustration.

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Section: Resultssupporting

confidence: 77%

New magnetic materials obtained by ion-exchange reactions from non-magnetic layered perovskites

Kageyama¹,

Viciu²,

Caruntu³

et al. 2004

J. Phys.: Condens. Matter

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“…It should be mentioned that in our attempts to prepare the corresponding K compounds, we could prepare the nearly single-phase Sr compound KSr Nb O which can be indexed by an orthorhombic unit cell with lattice constants a"3.913 (1), b"29.960 (5), and c"3.902(1) A > . As the material is very sensitive to a texture e!ect it cannot be excluded that the remaining di!erences between the observed and the calculated intensities are due to preferred orientation.…”

Section: Structure Rexnementmentioning

confidence: 99%

Synthesis, Structure, and Electrical Conductivity of A′[A2B3O10](A′=Rb, Cs; A=Sr, Ba; B=Nb, Ta): New Members of Dion–Jacobson-Type Layered Perovskites

Thangadurai

Schmid‐Beurmann²,

Weppner

2001

Journal of Solid State Chemistry

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“…[1] Both of these two phases can be feasibly converted into their protonated derivatives H[A m-1 B m -O 3m+1 ] and H 2 [A m-1 B m O 3m+1 ] by acid treatment. [2][3][4][5][6][7][8] These protonated layered perovskites have attracted much attention for their photocatalytic activity, [9] ion conductivity [10] and intercalation behaviour. [1,2,5] As is well-known, most layered compounds can be intercalated by organic cations or molecules to form intercalation compounds.…”

mentioning

confidence: 99%

Designed Reversible Alkylamine Intercalation–Deintercalation in the Layered Perovskite‐Type Oxide KCa₂Nb₃O₁₀

et al. 2008

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Reactions have been designed to verify the reversibility of butylamine intercalation–deintercalation in the layered perovskite‐type oxide KCa2Nb3O10. The reactions include ion exchange to form HCa2Nb3O10·1.5H2O, butylamine intercalation for producing C4H9NH3Ca2Nb3O10, transformation of C4H9NH3Ca2Nb3O10 into HCONH3Ca2Nb3O10 by formamide substitution and conversion of HCONH3Ca2Nb3O10 into HCa2Nb3O10·1.5H2O again by ion exchange. The complete reaction cycles were monitored by XRD, Raman spectroscopy, thermogravimetric (TG) and elemental analysis, and the resulting information was used to propose the structure evolution and to determine the organic components of the products. The well‐matched powder X‐ray diffraction (XRD) patterns and Raman spectra between the initial and recovered protonated materials confirmed that they have identical structural features of a protonated triple‐layered perovskite. The C, H and N elemental analysis results and TG data indicate that the regenerated layered perovskite‐type oxides also have a high capacity for alkylamine intercalation. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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Structure and ionic conductivity of MLaNb2O7 (M  K, Na, Li, H)

Cited by 82 publications

References 8 publications

New magnetic materials obtained by ion-exchange reactions from non-magnetic layered perovskites

New magnetic materials obtained by ion-exchange reactions from non-magnetic layered perovskites

Synthesis, Structure, and Electrical Conductivity of A′[A2B3O10](A′=Rb, Cs; A=Sr, Ba; B=Nb, Ta): New Members of Dion–Jacobson-Type Layered Perovskites

Designed Reversible Alkylamine Intercalation–Deintercalation in the Layered Perovskite‐Type Oxide KCa₂Nb₃O₁₀

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Structure and ionic conductivity of MLaNb2O7 (M  K, Na, Li, H)

Cited by 82 publications

References 8 publications

New magnetic materials obtained by ion-exchange reactions from non-magnetic layered perovskites

New magnetic materials obtained by ion-exchange reactions from non-magnetic layered perovskites

Synthesis, Structure, and Electrical Conductivity of A′[A2B3O10](A′=Rb, Cs; A=Sr, Ba; B=Nb, Ta): New Members of Dion–Jacobson-Type Layered Perovskites

Designed Reversible Alkylamine Intercalation–Deintercalation in the Layered Perovskite‐Type Oxide KCa2Nb3O10

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Designed Reversible Alkylamine Intercalation–Deintercalation in the Layered Perovskite‐Type Oxide KCa₂Nb₃O₁₀