New binary systems of solid solutions based on NaNbO3

Reznitchenko, L. A.; Dergunova, N. V.; Geguzina, G. A.; Razumovskaya, O. N.; Шилкина, Л. А.; Ivanova, L. S.

doi:10.1080/00150199808220263

Cited by 18 publications

(37 citation statements)

References 6 publications

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“…There is common agreement about a sequence of six structural phase transitions between phases with paraelectric and antiferroelectric order [15][16][17][18]. Narrower or wider composition ranges of solid solutions depend on the solubility limits of a specific ion [1]. When a solid solution is formed, usually new phases are formed due to the relatively soft structure of the sodium niobate.…”

Section: Introductionmentioning

confidence: 96%

“…When a solid solution is formed, usually new phases are formed due to the relatively soft structure of the sodium niobate. The ferroelectric properties, obtained in combination with other ferroelectric compounds, are still studied and their complex phase diagrams require a variety of experimental techniques [1,[19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Sodium niobate serves as a base compound for a variety of solid solutions showing a combination of electrical and mechanical properties [1]. Its electrical properties are affected by oxygen non-stoichiometry, doping and stress or electric field application.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

XPS examination of newly obtained (Na0.5Pb0.5)(Mn0.5Nb0.5)O3 ceramics

Ksepko

Talik

Ratuszna

et al. 2005

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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XPS examination of newly obtained (Na0.5Pb0.5)(Mn0.5Nb0.5)O3 ceramics

Ksepko

Talik

Ratuszna

et al. 2005

Journal of Alloys and Compounds

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“…ANO was prepared according to reference [35]. The molecular formula for the recrystallized ANO was established as NH 4 3 by XRD analysis, which matched well with the standard data of JCPDS 83-1993. Regarding the hygroscopic property, the water content of each reagent was measured by TG analysis before use.…”

Section: Materials Preparationmentioning

confidence: 99%

“…Sodium niobate (NaNbO 3 , NN hereafter), a well-known pervoskite-type oxide, possesses attractive physical properties and is applied in ferroelectric, piezoelectric and photocatalytic fields [1][2][3][4][5][6][7]. NN generally exhibits antiferroelectric properties at room temperature; however, it easily becomes ferroelectric materials by addition of other alkaline niobates, such as KNbO 3 and LiNbO 3 [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A facile synthesis of NaNbO3 powders by decomposition of ammonium niobium oxalate with sodium salt at low temperature

Zhai

Jiang

et al. 2010

Res Chem Intermed

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A facile synthesis of NaNbO 3 powders was performed by solid-state reaction at low temperature. Stoichiometric ammonium niobium oxalate and Na 2 CO 3 were mixed in water and then calcined at different temperatures for various times after drying. A combination of X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy and thermogravimetric (TG) analysis was used to characterie the product and precursor compound. The XRD patterns show that single-phase NaNbO 3 powders with high crystallinity can be synthesized at 425°C for 15 min. The particle size from XRD data is found to be about 40 nm for NaNbO 3 powders calcined at 500°C for 3 h, which is in good agreement with SEM data. The SEM photograph shows that NaNbO 3 powders are cuboid-like and well crystallized when calcination at 800°C for 3 h. The product compositions prepared using other sodium reactants, such as HCOONa and NaNO 3 , are also discussed.

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Visible–Near‐Infrared Diffuse Reflectance and Optical Energy Gap of Sodium Niobate Modified by Mn Ions: Na(Nb_1−zMn_z)O₃and (Na_1−xBi_x)(Nb_1−yMn_y)O₃Compounds Study

Molak

2022

Physica Status Solidi (b)

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The optical and electrical properties of sodium niobate crystals and ceramics doped with Mn atoms are studied. Na(Nb1−zMnz)O3 crystals exhibit actual z = 0–1.0 wt% Mn content. The Na(Nb1−zMnz)O3 ceramics contains Mn from the 0–5 wt% range. The (Na1−xBix)(Nb1−yMny)O3 ceramics is codoped with x = 0.015–0.50 and y = 0.01–0.33. Mn addition decreases the reflectance magnitude. Combined nonstoichiometry and local disorder in the crystal lattice, resulting from Mn doping and oxygen vacancies, induce contributions to the electronic structure. The visible and near‐infrared (Vis–NIR) diffuse reflectance, R(λ), spectra include a linear combination of contributions. The modified Kubelka–Munk function representation allows estimation of the optical energy gap, Egap. This estimation is qualitative because of the complex structure of the samples. Two optical gaps, showing dependence on Mn content, are discerned when Mn content <1 wt%. Egap,high changes toward the Shockley–Queisser limit, from 1.85 to 1.4 eV, when Mn content is low (z < 1 wt%). Simultaneous occurrence of Egap,low of 1.0–1.3 eV suggests tuning possibility. Egap of ≈1 eV dominates optical properties when Mn content is >1 wt%. The optical features are consistent with activation energy attributed to thermally generated electrical conductivity.

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New binary systems of solid solutions based on NaNbO3

Cited by 18 publications

References 6 publications

XPS examination of newly obtained (Na0.5Pb0.5)(Mn0.5Nb0.5)O3 ceramics

XPS examination of newly obtained (Na0.5Pb0.5)(Mn0.5Nb0.5)O3 ceramics

A facile synthesis of NaNbO3 powders by decomposition of ammonium niobium oxalate with sodium salt at low temperature

Visible–Near‐Infrared Diffuse Reflectance and Optical Energy Gap of Sodium Niobate Modified by Mn Ions: Na(Nb_1−zMn_z)O₃and (Na_1−xBi_x)(Nb_1−yMn_y)O₃Compounds Study

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New binary systems of solid solutions based on NaNbO3

Cited by 18 publications

References 6 publications

XPS examination of newly obtained (Na0.5Pb0.5)(Mn0.5Nb0.5)O3 ceramics

XPS examination of newly obtained (Na0.5Pb0.5)(Mn0.5Nb0.5)O3 ceramics

A facile synthesis of NaNbO3 powders by decomposition of ammonium niobium oxalate with sodium salt at low temperature

Visible–Near‐Infrared Diffuse Reflectance and Optical Energy Gap of Sodium Niobate Modified by Mn Ions: Na(Nb1−zMnz)O3and (Na1−xBix)(Nb1−yMny)O3Compounds Study

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Visible–Near‐Infrared Diffuse Reflectance and Optical Energy Gap of Sodium Niobate Modified by Mn Ions: Na(Nb_1−zMn_z)O₃and (Na_1−xBi_x)(Nb_1−yMn_y)O₃Compounds Study