Structural instabilities, incommensurate modulations and P and Q phases in sodium niobate in the temperature range 300–500 K

Резниченко, Л. А.; Шилкина, Л. А.; Gagarina, E. S.; Raevski, I. P.; Dul’kin, E.; Кузнецова, Е. М.; Akhnazarova, V. V.

doi:10.1134/1.1578130

Cited by 58 publications

(40 citation statements)

References 11 publications

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“…[33][34][35] Crystallographically, the unit cells of P and Q phases are quadrupled and doubled, respectively, in [010] direction of the prototype cubic perovskite unit cell. 18 Subsequently, superlattice diffractions with 1 = 4 {010}-type, for P phase, and 1 = 2 {010}-type, for Q phase, are manifested in the electron diffraction patterns.…”

Section: Resultsmentioning

confidence: 99%

Strategy for stabilization of the antiferroelectric phase (Pbma) over the metastable ferroelectric phase (P21ma) to establish double loop hysteresis in lead-free (1−x)NaNbO3-xSrZrO3 solid solution

Guo

Shimizu

Mizuno

et al. 2015

Journal of Applied Physics

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Large strain response based on relaxor-antiferroelectric coherence in Bi0.5Na0.5TiO3-SrTiO3-(K0.5Na0.5)NbO3 solid solutions A new lead-free antiferroelectric solid solution system, (1Àx)NaNbO 3 -xSrZrO 3 , was rationalized through noting the crystal chemistry trend, of decreasing the tolerance factor and an increase in the average electronegativity of the system. The SrZrO 3 doping was found to effectively stabilize the antiferroelectric (P) phase in NaNbO 3 without changing its crystal symmetry. Preliminary electron diffraction and polarization measurements were presented which verified the enhanced antiferroelectricity. In view of our recent report of another lead-free antiferroelectric system (1Àx)NaNbO 3 -xCaZrO 3 [H. Shimizu et al. "Lead-free antiferroelectric: xCaZrO 3 -(1Àx)NaNbO 3 system (0 x 0.10)," Dalton Trans. (published online)], the present results point to a general strategy of utilizing tolerance factor to develop a broad family of new lead-free antiferroelectrics with double polarization hysteresis loops. We also speculate on a broad family of possible solid solutions that could be identified and tested for this important type of dielectric. V C 2015 AIP Publishing LLC. [http://dx.

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Section: Resultsmentioning

confidence: 99%

Strategy for stabilization of the antiferroelectric phase (Pbma) over the metastable ferroelectric phase (P21ma) to establish double loop hysteresis in lead-free (1−x)NaNbO3-xSrZrO3 solid solution

Guo

Shimizu

Mizuno

et al. 2015

Journal of Applied Physics

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“…The FE Q-phase has not been detected in ceramics, 2,4 powders, 2 and some crystals. 4 This phase can be triggered by the relatively small electric fields, and its content depends on sample history. The P-phase can experience a sequence of transitions on cooling ͑orthorhombic-INC-monoclinic͒.…”

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confidence: 99%

Unstable state in epitaxial films of sodium niobate

Tyunina

Levoska

2009

Applied Physics Letters

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Epitaxial perovskite-type films of sodium niobate were grown by pulsed laser deposition, and their crystal structure and dielectric properties were experimentally studied. The dielectric permittivity, inverse permittivity and its derivative, and dielectric hysteresis were analyzed and compared with those of antiferroelectric lead zirconate films. At temperatures in the interval of 80–600 K, the state of the sodium niobate films with relaxed misfit strain is interpreted as an unstable coexistence of antiferroelectric and ferroelectric phases. The origin of the ferroelectric phase is discussed.

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“…Table II. The arrangement of atoms in the unit cell, the motives of atoms arrangement in the projection on the coordinate planes and distances O -O and Nb -O in the octahedra NbO 6 and Na -O in the coordination sodium polyhedron are shown in Fig. 2.…”

Section: Resultsmentioning

confidence: 99%

“…It is important to note that then in the NaNbO 3 structure Na + (R + Na = 0.98 Å) is substituted by Li + (R + Li = 0.68 Å) at relatively low lithium concentration (х ≈ 0.03) the size of the cuboctahedral cavity is larger compared with the lithium cation than for Li 0.12 Na 0.88 Та у Nb 1-у O 3 solid solutions. In this case, lithium cation is relatively "free" within the cuboctahedral cavity [6]- [8] and the transition to the state with high ionic mobility and large values of ionic conductivity may occur at lower temperatures. This temperature also can be lowered by increasing disorder in the niobium and tantalum sublattice during isovalent substitution [1].…”

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confidence: 99%

Investigation of the Li0.03Na0.97TaуNb1-уO3 Solid Solution Structure and Properties by X-ray Analysis and Raman Spectroscopy

Sidorov¹,

Palatnikov²,

Teplyakova³

et al. 2013

Journal on Selected Topics in Nano Electronics and Computing

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Structural instabilities, incommensurate modulations and P and Q phases in sodium niobate in the temperature range 300–500 K

Cited by 58 publications

References 11 publications

Strategy for stabilization of the antiferroelectric phase (Pbma) over the metastable ferroelectric phase (P21ma) to establish double loop hysteresis in lead-free (1−x)NaNbO3-xSrZrO3 solid solution

Strategy for stabilization of the antiferroelectric phase (Pbma) over the metastable ferroelectric phase (P21ma) to establish double loop hysteresis in lead-free (1−x)NaNbO3-xSrZrO3 solid solution

Unstable state in epitaxial films of sodium niobate

Investigation of the Li0.03Na0.97TaуNb1-уO3 Solid Solution Structure and Properties by X-ray Analysis and Raman Spectroscopy

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