Etude cristallochimique de nouvelles phases oxyfluorées dérivées de SrTiO3

Kermoun, H.; Benziada-Taı̈bi, L.

doi:10.1016/s0022-1139(99)00115-3

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…Superlattice reflections are detected with the formation of a complex perovskite structure isomorphous with NaNbO 3 . This result agrees quite well with our previous works on oxifluorides deriving from SrTiO 3 [6]. The peaks of X-ray patterns were indexed by comparison with the NaNbO 3 orthorhombic phase at room temperature.…”

Section: Resultssupporting

confidence: 91%

Synthesis and Characterization of New Phases with Composition Sr1-xNax(Ti1-xMgx)O3-3xF3x

Talantikite¹,

Ladjeroud²,

Taïbi-Benziada

2004

KEM

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A mixture of NaF and MgF 2 has been used to sinter SrTiO 3 at low temperature. A new solid solution Sr 1-x Na x (Ti 1-x Mg x )O 3-3x F 3x (0 ≤ x ≤ 0.20) has been obtained after sintering at 950 °C for 2 hours. From the X-ray diffraction analysis, each sample is a perovskite single phase with an orthorhombic symmetry whatever the value of x. Dielectric measurements have been performed as a function of temperature (300 K ≤ T ≤ 773 K) at two frequencies (100 Hz or 1000 Hz). DSC analysis have been carried out between room temperature and 873 K.Sr 1-x Na x (Ti 1-x Mg x )O 3-3x F 3x

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Section: Resultssupporting

confidence: 91%

Synthesis and Characterization of New Phases with Composition Sr1-xNax(Ti1-xMgx)O3-3xF3x

Talantikite¹,

Ladjeroud²,

Taïbi-Benziada

2004

KEM

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“…In previous works we studied SrTiO 3 -CaF 2 -LiF, SrTiO 3 -SrF 2 -LiF and SrTiO 3 -PbF 2 -LiF chemical systems and three solid solutions were obtained [34]. In the present study we selected the mixtures 0.03 mol.…”

Section: Introductionmentioning

confidence: 99%

Effects of 0.03MF2 – 0.12LiF (M = Ca, Sr, Ba) on the Sintering and Dielectric Properties of SrTiO3 Ceramics

Taïbi-Benziada

Kermoun

Belaroussi

2013

JERA

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Cold-pressed pellets were prepared from the mixtures SrTiO3- 0.03MF2- 0.12LiF, M = Ca, Sr or Ba, then air-fired at 950 °C for 2 hours. The obtained samples were investigated by X-ray diffraction and scanning electron microscopy. Each ceramic is a perovskite single phase and the relative density reaches 95% for all ceramics. The addition of 3 mol. % of the eutectic composition 1MF2- 4LiF (Tm~ 760 °C) to SrTiO3lowers the sintering temperature of pure strontium titanate from 1400 °C to 950 °C and induces a strong modification in the SrTiO3cubic phase: superlattice reflections are detected and the unit cell symmetry becomes orthorhombic. Dielectric measurements were performed between - 150 °C and 200 °C in the frequency range 20 Hz - 109Hz. The dielectric permittivity εrshowed no maximum in the temperature range investigated and is almost frequency independent. At room temperature, the dielectric losses tanδ are less than 0.1 %. Moreover, the frequency dependence of the complex permittivity exhibits a resonance in the microwave region. These fluorinated ceramics could be of interest in piezoelectric devices and are promising dielectrics for class I capacitors manufactured at low temperature.

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ChemInform Abstract: Crystallographic Study of Novel Oxyfluoride Phases Derived from SrTiO₃.

Kermoun¹,

Benziada-Taı̈bi²

2000

ChemInform

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Etude cristallochimique de nouvelles phases oxyfluorées dérivées de SrTiO3

Cited by 6 publications

References 15 publications

Synthesis and Characterization of New Phases with Composition Sr<sub>1-x</sub>Na<sub>x</sub>(Ti<sub>1-x</sub>Mg<sub>x</sub>)O<sub>3-3x</sub>F<sub>3x</sub>

Synthesis and Characterization of New Phases with Composition Sr<sub>1-x</sub>Na<sub>x</sub>(Ti<sub>1-x</sub>Mg<sub>x</sub>)O<sub>3-3x</sub>F<sub>3x</sub>

Effects of 0.03MF<sub>2</sub> – 0.12LiF (M = Ca, Sr, Ba) on the Sintering and Dielectric Properties of SrTiO<sub>3</sub> Ceramics

ChemInform Abstract: Crystallographic Study of Novel Oxyfluoride Phases Derived from SrTiO₃.

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Etude cristallochimique de nouvelles phases oxyfluorées dérivées de SrTiO3

Cited by 6 publications

References 15 publications

Synthesis and Characterization of New Phases with Composition Sr<sub>1-x</sub>Na<sub>x</sub>(Ti<sub>1-x</sub>Mg<sub>x</sub>)O<sub>3-3x</sub>F<sub>3x</sub>

Synthesis and Characterization of New Phases with Composition Sr<sub>1-x</sub>Na<sub>x</sub>(Ti<sub>1-x</sub>Mg<sub>x</sub>)O<sub>3-3x</sub>F<sub>3x</sub>

Effects of 0.03MF<sub>2</sub> – 0.12LiF (M = Ca, Sr, Ba) on the Sintering and Dielectric Properties of SrTiO<sub>3</sub> Ceramics

ChemInform Abstract: Crystallographic Study of Novel Oxyfluoride Phases Derived from SrTiO3.

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ChemInform Abstract: Crystallographic Study of Novel Oxyfluoride Phases Derived from SrTiO₃.