Structure and Transport Properties of Doped Apatite-type Lanthanum Silicates Prepared via Mechanochemical Route

2019 ◽  
Vol 25 (2) ◽  
pp. 1791-1800 ◽  
Author(s):  
Tamara Kharlamova ◽  
Svetlana Pavlova ◽  
Vladislav A. Sadykov ◽  
Yulia Bespalko ◽  
Tamara Krieger ◽  
...  
Keyword(s):  
Transport Properties ◽  
Lanthanum Silicates ◽  
Apatite Type

Doped Apatite Type Lanthanum Silicates: Structure and Property Characterization

2008 ◽  
Vol 1126 ◽  
Author(s):  
Tamara Kharlamova ◽  
Svetlana Pavlova ◽  
Vladislav A Sadykov ◽  
Tamara Krieger ◽  
Lubsan Batuev ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Impedance Spectroscopy ◽  
Transport Properties ◽  
Structural Features ◽  
Structural Studies ◽  
Structure And Property ◽  
Lanthanum Silicates ◽  
Property Characterization ◽  
Apatite Type

AbstractStructural features and transport properties of Fe- and Al-doped apatite-type lanthanum silicates were studied with relation to a role of the [SiO4] substructure. XRD, TEM, Mössbauer, UV-Vis electron, IR, 29Si and 27Al NMR spectroscopy were used for structural studies; impedance spectroscopy and oxygen isotope heteroexchange were used for transport properties characterization.

Al-Doped Apatite-Type Nanocrystalline Lanthanum Silicates Prepared by Mechanochemical Synthesis: Phase, Structural and Microstructural Study

2008 ◽  
Vol 2008 (6) ◽  
pp. 939-947 ◽  
Author(s):  
Tamara Kharlamova ◽  
Svetlana Pavlova ◽  
Vladislav Sadykov ◽  
Marina Chaikina ◽  
Tamara Krieger ◽  
...  
Keyword(s):  
Mechanochemical Synthesis ◽  
Microstructural Study ◽  
Lanthanum Silicates ◽  
Apatite Type

Oxide ion conduction anisotropy deconvoluted in polycrystalline apatite-type lanthanum silicates

2011 ◽  
Vol 21 (9) ◽  
pp. 2940 ◽  
Author(s):  
Yong Kim ◽  
Dong-Kyu Shin ◽  
Eui-Chol Shin ◽  
Hyun-Ho Seo ◽  
Jong-Sook Lee
Keyword(s):  
Ion Conduction ◽  
Lanthanum Silicates ◽  
Oxide Ion Conduction ◽  
Oxide Ion ◽  
Apatite Type ◽  
Conduction Anisotropy

Mechanochemical Synthesis of Fe-Doped Apatite-Type Lanthanum Silicates

2010 ◽  
Vol 2010 (4) ◽  
pp. 589-601 ◽  
Author(s):  
Tamara Kharlamova ◽  
Svetlana Pavlova ◽  
Vladislav Sadykov ◽  
Marina Chaikina ◽  
Tamara Krieger ◽  
...  
Keyword(s):  
Mechanochemical Synthesis ◽  
Lanthanum Silicates ◽  
Apatite Type

Synthesis, Structure and Electrical Properties of Pr-Doped Apatite-Type Lanthanum Silicates

2015 ◽  
Vol 1094 ◽  
pp. 155-159
Author(s):  
Li Peng Tian ◽  
Zhi Hua Ren
Keyword(s):  
Electrical Properties ◽  
Sol Gel ◽  
Complex Impedance ◽  
Impedance Analysis ◽  
Total Conductivity ◽  
X Ray Diffraction ◽  
Complex Impedance Analysis ◽  
Sol Gel Process ◽  
Lanthanum Silicates ◽  
Apatite Type

Apatite-type lanthanum silicates doped with Pr3+ at the La site, La10-xPrxSi6O27 (x = 0, 1, 2, 3, 4, 4.5), were synthesized via sol-gel process. Thermal behavior of the dried gel of La10-xPrxSi6O27 sample was studied using TG/DTA. X-ray diffraction, SEM and complex impedance analysis were used to investigate the microstructure and electrical properties of La10-xPrxSi6O27 ceramics. The XRD results indicated the maximum doping quantity of Pr3+ is x = 4.5. Lanthanum silicates doped with Pr3+ cations have a higher total conductivity than that of undoped lanthanum silicates. The enhanced total conductivity depends on the improved density of La10-xPrxSi6O27 (x = 0, 1, 2, 3, 4, 4.5). At 973K, the highest total conductivity is 1.36×10-3S.cm-1 for La9PrSi6O27 ceramic.

Synthesis and physicochemical and catalytic properties of apatite-type lanthanum silicates

2014 ◽  
Vol 55 (3) ◽  
pp. 361-371 ◽  
Author(s):  
T. S. Kharlamova ◽  
A. S. Matveev ◽  
A. V. Ishchenko ◽  
A. N. Salanov ◽  
S. V. Koshcheev ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Lanthanum Silicates ◽  
Apatite Type

Sintering kinetics and oxide ion conduction in Sr-doped apatite-type lanthanum silicates, La9Sr1Si6O26.5

2009 ◽  
Vol 180 (36-39) ◽  
pp. 1593-1598 ◽  
Author(s):  
Claire Bonhomme ◽  
Sophie Beaudet-Savignat ◽  
Thierry Chartier ◽  
Alexandre Maître ◽  
Anne-Laure Sauvet ◽  
...  
Keyword(s):  
Ion Conduction ◽  
Sintering Kinetics ◽  
Lanthanum Silicates ◽  
Oxide Ion Conduction ◽  
Oxide Ion ◽  
Apatite Type
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