Pyrochlore structure and spectroscopic studies of titanate ceramics. A comparative investigation on SmDyTi 2 O 7 and YDyTi 2 O 7 solid solutions

2018 ◽  
Vol 198 ◽  
pp. 188-197 ◽  
Author(s):  
A. Garbout ◽  
M. Férid
Keyword(s):  
Solid Solutions ◽  
Pyrochlore Structure ◽  
Spectroscopic Studies ◽  
Comparative Investigation ◽  
Titanate Ceramics

X-ray powder diffraction and Mössbauer spectroscopic studies on the solubility limits in γ-FeOOH/γ-AIOOH solid solutions

1994 ◽  
Vol 29 (12) ◽  
pp. 3269-3273 ◽  
Author(s):  
E. Wolska ◽  
J. Šubrt ◽  
Z. Hába ◽  
J. Tláskal ◽  
U. Schwertmann
Keyword(s):  
Powder Diffraction ◽  
Solid Solutions ◽  
Spectroscopic Studies ◽  
X Ray

Photoacoustic and X-ray photoelectron spectroscopic studies in reduced lead zirconate titanate ceramics

1988 ◽  
Vol 23 (7) ◽  
pp. 2631-2636 ◽  
Author(s):  
N. R. Rajopadhye ◽  
S. V. Bhoraskar ◽  
S. Badrinarayan ◽  
A. P. B. Sinha
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Spectroscopic Studies ◽  
X Ray ◽  
Zirconate Titanate ◽  
Titanate Ceramics

Titanate Ceramics with Pyrochlore Structure as a Matrix for Immobilization of Excess Weapons-Grade Plutonium: II. Hydrolytic Resistance

2004 ◽  
Vol 46 (4) ◽  
pp. 358-363 ◽  
Author(s):  
Yu. F. Volkov† ◽  
S. V. Tomilin ◽  
A. N. Lukinykh ◽  
A. A. Lizin ◽  
A. A. Elesin ◽  
...  
Keyword(s):  
Pyrochlore Structure ◽  
Hydrolytic Resistance ◽  
Titanate Ceramics ◽  
Weapons Grade Plutonium

Structural and impedance spectroscopic studies of samarium modified lead zirconate titanate ceramics

2009 ◽  
Vol 404 (20) ◽  
pp. 3709-3716 ◽  
Author(s):  
Rajiv Ranjan ◽  
Rajiv Kumar ◽  
Banarji Behera ◽  
R.N.P. Choudhary
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Spectroscopic Studies ◽  
Zirconate Titanate ◽  
Titanate Ceramics

Spectroscopic studies of SiO2–AlPO4 solid solutions

1999 ◽  
Vol 19 (2) ◽  
pp. 419-423 ◽  
Author(s):  
M Handke ◽  
M Rokita ◽  
W Mozgawa
Keyword(s):  
Solid Solutions ◽  
Spectroscopic Studies

scholarly journals Magnetic behavior of Fe-doped of multicomponent bismuth niobate pyrochlore

2021 ◽  
Vol 60 (1) ◽  
pp. 38-46
Author(s):  
Nadezhda A. Zhuk ◽  
Boris A. Makeev ◽  
Sergey V. Nekipelov ◽  
Maria V. Yermolina ◽  
Anna V. Fedorova ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Solid Phase ◽  
Synthesis Method ◽  
Pyrochlore Structure ◽  
Exchange Interactions ◽  
Magnetic Behavior ◽  
Susceptibility Data ◽  
Nexafs Spectroscopy ◽  
Magnetic Dilution ◽  
Paramagnetic Atoms

Abstract Two series of iron-containing solid solutions Bi2Mg1− x Fe x Nb2O9+δ and Bi2MgNb2−2 x Fe2 x O9−δ of pyrochlore structure were obtained by the traditional solid phase synthesis method. The electronic state and character of exchange interactions of iron atoms in solid solutions were investigated by methods of magnetic dilution and NEXAFS-spectroscopy. According to X-ray spectroscopy and magnetic susceptibility data, iron(III) atoms are distributed mainly in octahedral positions of niobium(V) and in a dominant amount are in the charge state of Fe(III) in the form of monomers and exchange-bonded clusters mainly with antiferromagnetic type of exchange. Differences in magnetic behavior of iron-containing solid solutions of both series have been revealed. Antiferromagnetic and ferromagnetic exchange can be realized between iron atoms, which, with increasing concentration of paramagnetic atoms and averaging structure distortions, becomes less significant. The parameters of exchange interactions in clusters and distribution of iron paramagnetic atoms depending on the concentration of solid solutions have been calculated.

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