Dielectric relaxation in double potassium yttrium orthophosphate K3Y(PO4)2 and sodium yttrium orthophosphate Na3Y(PO4)2

Szulia, S.; Kołodziej, H.A.; Szuszkiewicz, W.; Czupińska, G.

doi:10.1016/j.jnoncrysol.2009.09.045

Cited by 13 publications

(7 citation statements)

References 5 publications

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“…The structural and optical properties of the double phosphates have been extensively studied for the last decade [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. However, sodium orthophosphates Na 3 RE(PO 4 ) 2 have been optically characterized [7, 19-21, 25, 31] mainly in its orthorhombic form.…”

Section: Introductionmentioning

confidence: 99%

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

Matraszek

Godlewska

Macalik

et al. 2015

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

Matraszek

Godlewska

Macalik

et al. 2015

Journal of Alloys and Compounds

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“…Electric permittivity has been measured in the frequency range of 1 kHz–1 MHz using Hewlett-Packard 4284A LZC equipment as described by Szulia and co-workers . The precision of the measurements was 2% for electric permittivity.…”

Section: Methodsmentioning

confidence: 99%

Intermolecular Interactions in the Solid State of Ionic Secondary Mannich Bases

Kołodziejczak

Adamczyk‐Woźniak

Hachuła

et al. 2012

Crystal Growth & Design

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Two new secondary Mannich bases, 4-bromo-2-[(aminopropyl)methyl]-phenol (1) and 4-nitro-2-[(aminopropyl)methyl]-phenol (2), were synthesized. Crystal structures were determined at liquid nitrogen temperature. It was found that in both compounds the proton transfer forms exist in the solid state. In the case of 1, this was unexpected, because of the weak acidity of p-bromophenol being the parent component of this Mannich base. The reason for that was found to be the formation of the O–···H–N+ hydrogen bonded tetramer in the solid state. Two cyclic aggregates R4 2(8) and R2 2(12) describe the pattern of hydrogen bonded interactions in the crystals of both compounds. Additionally, C–H···π interactions stabilize the crystal structures. The hydrogen bonds in 1 are slightly stronger (N···O distances 2.708 and 2.733 Å) than in 2 (2.721 and 2.765 Å, respectively) despite the fact that p-nitrophenol participating in 2 is a stronger acid. The influence of permittivity of surroundings and the hydrogen bonding pattern on the properties of intermolecular hydrogen bonds are discussed on the basis of B3LYP and MP2 calculations with basis sets 6-31+G(d,p) and 6-31++G(2d,2p). The coupling between hydrogen bonds in crystals was studied with the application of the IR spectra of isotopically diluted species. It was found that such a coupling is stronger for 2, forming weaker hydrogen bonds. Both the theory of IR spectra and quantum chemical calculations demonstrate that the source of the observed behavior is electronic participation in vibronic absorption.

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“…However, there are very numerous works on double phosphates such as: M 3 I RE (PO 4 ) 2 and M I M II PO 4 ( M I = an alkali metal or another monovalent element; M II = a alkaline‐earth metal or another divalent element; RE = a lanthanide element or Y, or Sc), which include respectively Rb 3 Y(PO 4 ) 2 and BaRbPO 4 . Double phosphates M 3 I RE (PO 4 ) 2 , both in the phase‐pure form and doped with different ions (mainly lanthanide ions), arouse considerable interest of various research centers in view of their use as luminophores and laser materials or their dielectric properties . Considering the large number of works dealing with the crystalline structures and polymorphism of M 3 I RE (PO 4 ) 2 phosphates, this literature review is limited to reports on double Rb 3 RE (PO 4 ) 2 phosphates.…”

Section: Introductionmentioning

confidence: 99%

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System

2016

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A phase diagram of the Rb 3 Y(PO 4 ) 2 -BaRbPO 4 system for the whole range of compositions, up to a temperature of 1700°C, has been developed on the basis of the results of thermal and XRD analyses and microscopic examinations. The investigated system has an eutectic character. Limited solid solutions with the high-temperature (a) and low-temperature (b) structure of BaRbPO 4 form in this system. The maximum solubility of Rb 3 Y(PO 4 ) 2 in the high-temperature solid solution (a ss ) occurs at the eutectic temperature (1275°C), amounting to~80 mass % Rb 3 Y(PO 4 ) 2 . At 988°C, the a ss decomposes according to eutectoidal reaction: a ss ↔ b s + Rb 3 Y(PO 4 ) 2 . The maximum content of Rb 3 Y(PO 4 ) 2 in the low-temperature limited solid solution (b ss ) does not exceed 10 mass% Rb 3 Y(PO 4 ) 2 . The a ss phase has a hexagonal glaserite-like structure with the unit cell parameters a % 5.7 and b % 8.1 A.

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Dielectric relaxation in double potassium yttrium orthophosphate K3Y(PO4)2 and sodium yttrium orthophosphate Na3Y(PO4)2

Cited by 13 publications

References 5 publications

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

Intermolecular Interactions in the Solid State of Ionic Secondary Mannich Bases

New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System

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Dielectric relaxation in double potassium yttrium orthophosphate K3Y(PO4)2 and sodium yttrium orthophosphate Na3Y(PO4)2

Cited by 13 publications

References 5 publications

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

Optical and thermal characterization of microcrystalline Na3RE(PO4)2:Yb orthophosphates synthesized by Pechini method (RE= Y, La, Gd)

Intermolecular Interactions in the Solid State of Ionic Secondary Mannich Bases

New Solid Solutions and Phase Equilibria in the Rb3Y(PO4)2–BaRbPO4 System

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Product

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New Solid Solutions and Phase Equilibria in the Rb₃Y(PO₄)₂–BaRbPO₄ System