Metal atom incorporation studies on the phases with NZP structure: □NbTiP3O12
TL;DR: A wide variety of electropositive elements of the periodic table can be inserted into the vacant sites in the host framework structure of hexagonal NbTiP 3 O 12 (an analog of nasicon) to give rise to isostructural phases as discussed by the authors.
About: This article is published in Journal of Solid State Chemistry.The article was published on 1987-09-01. It has received 38 citations till now. The article focuses on the topics: Isostructural.
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TL;DR: A wide range of materials based on crystalline and glassy Nasicon compositions are considered in this paper, and their structure, compositional diversity, evolution, and applications are reviewed.
Abstract: Nasicons (sodium super ion conductors) are a class of solid electrolytes. Their structure, compositional diversity, evolution, and applications are reviewed. A wide range of materials is considered based on crystalline and glassy Nasicon compositions.
407 citations
TL;DR: In this paper, the authors deal with aspects of the modelling of the compositions and properties of inorganic compounds with tetrahedral anions on the basis of crystal-chemical information.
Abstract: The review deals with aspects of the modelling of the compositions and properties of inorganic compounds with tetrahedral anions on the basis of crystal-chemical information. One of the possible algorithms employing crystal-chemical data for the modelling of the compositions, structures, and properties of new compounds is proposed on the basis of the structures of six structural types (glaserite, β-K2SO4, bredigite, palmierite, NASICON, and whitlockite). The likely usefulness of such data for the solution of various problems in materials science is demonstrated. The bibliography includes 208 references.
90 citations
TL;DR: Cobalt-chromite green and chrome-tin pink pigments have been prepared from chromium extracted from leather shavings produced as a waste product of the leather-tanning industry and the alkaline agent used in the extraction process influences the nature of the final product.
65 citations
TL;DR: In this article, the thermal expansion of the sodium zirconium phosphate (NZP) family of compounds A1/2M2(PO4)3 (A = Ca or Sr; M = Ti, Zr, Hf or Sn) has been measured in the temperature range 298-1273 K by high-temperature X-ray powder diffractometry.
Abstract: Thermal expansion of the sodium zirconium phosphate (NZP) family of compounds A1/2M2(PO4)3 (A = Ca or Sr; M = Ti, Zr, Hf or Sn) has been measured in the temperature range 298–1273 K by high-temperature X-ray powder diffractometry. Some of the compounds in the series (calcium zirconium phosphate and calcium hafnium phosphate) display the typical thermal expansion behaviour of NZP compounds, namely expansion along the hexagonal c axis and contraction along the a axis. The other compounds, depending on their interstitial and framework composition, behave differently. The observed axial thermal expansion and contraction behaviour is explained on the basis of the crystal chemistry of the compounds. Low-expansion compounds in this series are identified and their expansion anisotropy examined. Infared spectra of the compounds are reported. Differential scanning calorimetry measurements on the tin compounds indicate the occurrence of a diffuse phase transformation at high temperatures.
49 citations
TL;DR: The problems of isomorphism in phosphates that are structural analogs of NaZr2(PO4)3 (NZP) are discussed in this article, where data on the crystal chemistry of orthophosphates of the framework structure are systematized according to suggested classification of their formula types.
Abstract: The problems of isomorphism in phosphates that are structural analogs of sodium zirconiumorthophosphate NaZr2(PO4)3 (NZP) are discussed. Data on the crystal chemistry of orthophosphates of theframework structure are systematized according to the suggested classification of their formula types. Thetheoretically possible, actually occurring isomorphism of cations in phosphates, in particular, isomorphisminvolving f-element cations, is discussed. The isomorphous capacity of the NZP structure toward variouscations was evaluated. Data on isomorphism in phosphates are necessary for choosing a suitable single-phase ceramic matrix for incorporation of radionuclides and adjusting its composition to actual nuclear waste.
49 citations
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TL;DR: In this article, Li has been inserted chemically and electrochemically into Mn3O4 and Li[Mn2]O4 at room temperature from X-ray diffraction.
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TL;DR: In this paper, the topochemical lithiation of rutile related MO 2 with n-BuLi and in nonaqueous lithium electrochemical cells is reported, which illustrates the importance of electronic conductivity and cell volume to substantial lithium incorporation.
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TL;DR: In this paper, various compositions (x from 1 to 3) were obtained from chemically coprecipitated powders, and the 1.6-approximation was obtained from a single sample.
186 citations