Search for new superconductors by the Li-intercalation into layered perovskites

Kato, Masaru; Kajita, Taketoshi; Hanakago, R; Koike, Yasuhiro

doi:10.1016/j.physc.2006.03.070

Cited by 12 publications

(4 citation statements)

References 13 publications

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“…Various superconductors have been synthesized by the electrochemical Li-ion intercalation, e.g. Li x M NCl ( M = Zr and Hf), Li x Sr 2 CuO 2 X 2 (X = Cl, Br, and I), Li x A Sr 2 Nb 3 O 10 ( A = Rb and Cs) and related nonstoichiometric compounds2345. The most electropositive Li + ions enable to dope a large number of electrons in parent materials although a range of the doping is limited to space available for intercalation of excess Li + ions.…”

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confidence: 99%

Reversible superconductor-insulator transition in LiTi2O4 induced by Li-ion electrochemical reaction

Yoshimatsu

Niwa

Mashiko

et al. 2015

Sci Rep

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Transition metal oxides display various electronic and magnetic phases such as high-temperature superconductivity. Controlling such exotic properties by applying an external field is one of the biggest continuous challenges in condensed matter physics. Here, we demonstrate clear superconductor-insulator transition of LiTi2O4 films induced by Li-ion electrochemical reaction. A compact electrochemical cell of pseudo-Li-ion battery structure is formed with a superconducting LiTi2O4 film as an anode. Li content in the film is controlled by applying a constant redox voltage. An insulating state is achieved by Li-ion intercalation to the superconducting film by applying reduction potential. In contrast, the superconducting state is reproduced by applying oxidation potential to the Li-ion intercalated film. Moreover, superconducting transition temperature is also recovered after a number of cycles of Li-ion electrochemical reactions. This complete reversible transition originates in difference in potentials required for deintercalation of initially contained and electrochemically intercalated Li+ ions.

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confidence: 99%

Reversible superconductor-insulator transition in LiTi2O4 induced by Li-ion electrochemical reaction

Yoshimatsu

Niwa

Mashiko

et al. 2015

Sci Rep

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“…However, like most underdoped parent HTS cuprates, these compounds are semiconducting. It can also be mentioned that Li x CsSr 2 Nb 3 O 10 is a superconductor with a critical temperature (T c ) of 5.5 K, whereas no superconducting state was observed in Li x CsSr 2 Ta 3 O 10 [56]. Ta substitution on Ru sites in RuSr 2 GdCu 2 O y , Tl sites in TlSr 2 CaCu 2 O 7 or Cu sites YBa 2 Cu 3 O 7 result in a decrease of T c [57][58][59].…”

Section: Previous Workmentioning

confidence: 99%

Subsolidus phase relations of the SrO–Ta2O5–CuO system at 900°C in air

Grivel

2009

Journal of Alloys and Compounds

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“…The Dion–Jacobson (DJ) phase layered perovskite oxides, A′[A n ‑1 B n O 3 n +1 ], consist of n negatively charged perovskite-like layers, which stack to form a two-dimensional layered structure, with a monovalent cation A′ occupying the interlayer space for compensation of the negative charge of layers. , The two- and three-layer DJ phase perovskite oxides exhibit various fascinating properties, such as ion exchange, intercalation, electronic/protonic-conductivity, superconductivity, , dielectric, , ferroelectric, and piezoelectric behavior, photoluminescence, , electrical and electrochemical properties, and photocatalytic activity for H + -exchanged forms of A(M n ‑l Nb n O 3 n +l ) (A = Na, K, Rb, Cs; M = La, Ca etc. ), silica pillared–niobate prepared from KCa 2 Nb 3 O 10 , RbCa 2 Nb 3 O 10 , MCa 2 Ta 3 O 10 with different interlayer cations (M = Cs, Na, H, and C 6 H 13 NH 3 ), and HCa 2– x Sr x Nb 3 O 10 and HCa 2 Nb 3– y Ta y O 10 nanosheets sensitized by Ru(II) polypyridyl complexes …”

Section: Introductionmentioning

confidence: 99%

New Dion–Jacobson Phase Three-Layer Perovskite CsBa₂Ta₃O₁₀ and Its Conversion to Nitrided Ba₂Ta₃O₁₀ Nanosheets via a Nitridation–Protonation–Intercalation–Exfoliation Route for Water Splitting

Hojamberdiev

Bekheet

Zahedi

et al. 2016

Crystal Growth & Design

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We report on the synthesis of new Dion−Jacobson phase threelayer perovskite CsBa 2 Ta 3 O 10 crystals by conventional solid-state reaction and fabrication of their nitrided Ba 2 Ta 3 O 10 nanosheets via a nitridation−protonation− intercalation−exfoliation route for visible-light-driven photocatalytic water splitting application. The two-dimensional crystal structure of CsBa 2 Ta 3 O 10 refined by the Rietveld refinement method belongs to the simple tetragonal system and consists of corner-shared distorted TaO 6 octahedra and Ba cations in cuboctahedral sites forming triple-layer perovskite slabs. The valence and conduction band edge potentials estimated by density functional theory with respect to vacuum scale and normal hydrogen electrode indicate that CsBa 2 Ta 3 O 10 is a UV-light-active semiconductor that can be used for photocatalytic water splitting and decomposition of organic pollutants. The projected electronic wave functions contour plot of CsBa 2 Ta 3 O 10 in the (1 0 0) plane exhibited two different Ta−O bonds. The nitridation at 800 °C for 5 h under NH 3 atmosphere was found to be suitable for retaining the phase-purity of nitrided CsBa 2 Ta 3 O 10 crystals. The fabricated nanosheets of nitrided Ba 2 Ta 3 O 10 with lateral sizes ranging from several hundred nanometers to a few micrometers and height of about 2.3 nm can be applied for visible-light-driven photocatalytic water splitting.

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Search for new superconductors by the Li-intercalation into layered perovskites

Cited by 12 publications

References 13 publications

Reversible superconductor-insulator transition in LiTi2O4 induced by Li-ion electrochemical reaction

Reversible superconductor-insulator transition in LiTi2O4 induced by Li-ion electrochemical reaction

Subsolidus phase relations of the SrO–Ta2O5–CuO system at 900°C in air

New Dion–Jacobson Phase Three-Layer Perovskite CsBa₂Ta₃O₁₀ and Its Conversion to Nitrided Ba₂Ta₃O₁₀ Nanosheets via a Nitridation–Protonation–Intercalation–Exfoliation Route for Water Splitting

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Search for new superconductors by the Li-intercalation into layered perovskites

Cited by 12 publications

References 13 publications

Reversible superconductor-insulator transition in LiTi2O4 induced by Li-ion electrochemical reaction

Reversible superconductor-insulator transition in LiTi2O4 induced by Li-ion electrochemical reaction

Subsolidus phase relations of the SrO–Ta2O5–CuO system at 900°C in air

New Dion–Jacobson Phase Three-Layer Perovskite CsBa2Ta3O10 and Its Conversion to Nitrided Ba2Ta3O10 Nanosheets via a Nitridation–Protonation–Intercalation–Exfoliation Route for Water Splitting

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New Dion–Jacobson Phase Three-Layer Perovskite CsBa₂Ta₃O₁₀ and Its Conversion to Nitrided Ba₂Ta₃O₁₀ Nanosheets via a Nitridation–Protonation–Intercalation–Exfoliation Route for Water Splitting