LV. The optical and electrical properties of single crystals of sodium niobate

Cross, L. E.; Nicholson, B.

doi:10.1080/14786440508520582

Cited by 243 publications

(116 citation statements)

References 8 publications

Supporting

Mentioning

106

Contrasting

Unclassified

Order By: Relevance

“…The net polarization of a crystal twinned by a diad down [010] and made up of equal volumes of the two orientations lies along [010], with no resultant moment in directions perpendicular to this. This net polarization scheme agrees with what was found by Cross & Nicholson (1955), the polarization along [010] having the property of allowing reversal by an applied field.…”

Section: The Twin Lawsupporting

confidence: 80%

“…At temperatures below about -110°C a new phase begins to appear which is ferroelectric (Cross & Nicholson, 1955). We shall call this phase N.…”

Section: The Aristotype and Hettotypesmentioning

confidence: 99%

“…For phase N, Cross & Nicholson (1955) measured a reversible spontaneous polarization in what had been the y direction of phase P, but could not detect any moment in directions perpendicular to this. They concluded that 'the ferroelectric properties are most likely produced by an additional ferroelectric displacement of the ions in a direction perpendicular to the (010) plane'.…”

Section: Phase Nmentioning

confidence: 99%

See 2 more Smart Citations

The low-temperature phase transition of sodium niobate and the structure of the low-temperature phase, N

Darlington¹,

Megaw²

1973

Acta Crystallogr B Struct Sci

118

View full text Add to dashboard Cite

Sodium niobate undergoes an antiferroelectric-ferroelectric transition (P ~ N) at temperatures below about -110°C. The ferroelectric low-temperature phase (N) is rhombohedral, with space group R3c.Though a perovskite structure, it is isostructural with LiNbO3. Using pseudocubic axes of reference, a=2 × 3"9083 (5) ~, ~= 89 ° 13 (1)' at -150°C. The NbO6 octahedra remain nearly regular, but are tilted about the triad axis; displacements of Nb atoms from the centres of octahedra are parallel to this axis. The temperature dependence of the lattice parameters of both phases, N and P, below room temperature is reported, and also that of the magnitude of the Nb displacement in the antiferroelectric phase P. Experimental details of the low-temperature work are given. Evidence used in the structure determination comes from the juxtaposition of high-angle reflexions from twin components in phase N, and the orientation of domains of phase N relative to the parent phase P. The transformation is more rapid and more complete if the parent crystal is single-domain; if it is twinned, both phases coexist for long periods down to the lowest temperatures studied. The relation of the structure to that of other niobates is discussed, and some general principles are put forward from which the occurrence of different structures and the transitions between them can be understood.

show abstract

Section: The Twin Lawsupporting

confidence: 80%

“…At temperatures below about -110°C a new phase begins to appear which is ferroelectric (Cross & Nicholson, 1955). We shall call this phase N.…”

Section: The Aristotype and Hettotypesmentioning

confidence: 99%

Section: Phase Nmentioning

confidence: 99%

See 1 more Smart Citation

The low-temperature phase transition of sodium niobate and the structure of the low-temperature phase, N

Darlington¹,

Megaw²

1973

Acta Crystallogr B Struct Sci

118

View full text Add to dashboard Cite

show abstract

“…2,9,10 In contrast, double hysteresis loops are only observed in high quality NaNbO 3 single crystals with an electric field applied perpendicular to the orthorhombic c axis during initial cycles; in subsequent cycles square loops, characteristic of ferroelectrics, are seen. 14,15 Square polarization hysteresis loops are usually observed in polycrystalline NaNbO 3 ceramic samples at room temperature once large polarizations are developed. 22 We believe that the NaNbO 3 polycrystalline ceramic is antiferroelectric at room temperature in the as-sintered state.…”

mentioning

confidence: 99%

“…NaNbO 3 is a perovskite compound known for its complex structures and phase transitions. [13][14][15][16][17] Its solid solutions are of technological importance due to applications in lead-free piezoelectric devices [18][19][20] and high-temperature capacitors. 21 Although NaNbO 3 has been investigated for more than six decades, researchers are still debating whether it is antiferroelectric or ferroelectric at room temperature.…”

mentioning

confidence: 99%

Antiferroelectricity induced by electric field in NaNbO3-based lead-free ceramics

Xu¹,

Hong²,

Feng³

et al. 2014

Applied Physics Letters

View full text Add to dashboard Cite

Electric fields are known to favor a ferroelectric phase with parallel electric dipoles over an antiferroelectric phase. We demonstrate in this Letter that electric fields can induce an antiferroelectric phase out of a ferroelectric phase in a NaNbO3-based lead-free polycrystalline ceramic. Such an unlikely ferroelectric-to-antiferroelectric phase transition occurs at fields with a reversed polarity and competes with the ferroelectric polarization reversal process.

show abstract

Thin‐Film Integrated Ferroelectrics

Trolier‐McKinstry

2003

Digital Encyclopedia of Applied Physics

View full text Add to dashboard Cite

LV. The optical and electrical properties of single crystals of sodium niobate

Cited by 243 publications

References 8 publications

The low-temperature phase transition of sodium niobate and the structure of the low-temperature phase, N

The low-temperature phase transition of sodium niobate and the structure of the low-temperature phase, N

Antiferroelectricity induced by electric field in NaNbO3-based lead-free ceramics

Thin‐Film Integrated Ferroelectrics

Contact Info

Product

Resources

About