The tungsten bronze field in the system K2O|Li2O|Nb2O5

Scott, B. A.; Giess, E. A.; Olson, B.L.; Burns, Gerald; Smith, Archibald W.; O'Kane, D. F.

doi:10.1016/0025-5408(70)90072-3

Cited by 133 publications

(50 citation statements)

References 15 publications

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“…By heating and cooling the crystal, the thermal effects were registered at 514°C (see fig. 3), which is slightly higher than the phase transition temperature registered by other analytical methods in this work and doesn't comply with the earlier data of Scott et al [5]. …”

Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 50%

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Study on the ferroelectric phase transition in potassium lithium niobate (KLN)

Podlojenov

Stade

Burianek

et al. 2006

Cryst. Res. Technol.

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The ferroelectric phase of potassium lithium niobate K 3 Li 2-x Nb 5+x O 15+2x (KLN) in the range of 0.15 < x < 0.5 is a very promising material for the second harmonic generation (SHG) in the blue visible region (~ 410 nm). The ferroelectric phase transition was shown to occur between 400 and 500°C depending on the composition of the KLN phase. In this study several analysis techniques were used to investigate the phase transition on ferroelectric (x=0.3) KLN samples. The temperature-dependent measurements of the relative dielectric constant ε 33 provided a phase transition temperature of about 470°C. In our DTA experiments, a small but reproducible thermal effect at the phase transition in KLN was indicated. The temperature-dependent birefringence measurement technique, applied the first time on KLN, shows a second order behaviour at a temperature of 467°C. However, this phase transition is accompanied by a small thermal effect. The DSC analysis for the other KLN composition (x=0.5) provided a phase transition temperature of 514°C. The appearance of a phase transition in the paraelectric KLN phase (Nb content higher than 55 mol %) was also studied.

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Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 50%

“…The phase transition temperature was shown to vary between 400-500 °C depending on the niobium content in the crystals [5]. The phase transition was reported to take place in the crystals with a niobium content ranging from 51 to 55 mole % Nb.…”

Section: Introductionmentioning

confidence: 98%

Study on the ferroelectric phase transition in potassium lithium niobate (KLN)

Podlojenov

Stade

Burianek

et al. 2006

Cryst. Res. Technol.

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“…In BNBT-65 the high conductivity is observed where as low conductivity is seen in BNBT-26. The observed high conductivity in BNBT-65 is attributed to the presence of oxygen vacancies and low conductivity in BNBT-26 may be due to an enhancement in barrier properties, suppression of lattice conduction path and local lattice distortion [40][41][42]. Present BNBT system showed a low frequency dielectric dispersion (LFDD) behavior (discussed in Dielectric analysis).…”

Section: Dielectricmentioning

confidence: 90%

Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties

Rao¹,

Rajulu²,

Tilak³

et al. 2010

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“…Scott et al [1] and Ikeda et al [2] studied the K 2 O±Li 2 O±Nb 2 O 5 system and found a wider tungsten-bronze type phase spreading toward the Nb-richer side. The crystal of composition K 3 Li 2Àx Nb 5x O 152x (KLN, x 0X1 to 0.5) [2,3] has been reported to have the tungsten bronze structure with very desirable electro-optic and nonlinear properties.…”

Section: Introductionmentioning

confidence: 98%