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Sawada, Shozo; Nomura, Shōichiro; S, Fujii; Yoshida, Itsuro

doi:10.1103/physrevlett.1.320

Cited by 187 publications

(40 citation statements)

References 5 publications

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“…NaNO 2 is a ferroelectric material which was discovered by Sawada et al [1] many years ago. It is an interesting material to study since it exhibits a sinusoidal antiferroelectric phase at the Neel temperature (T N = 165.3 °C).…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of the Spontaneous Polarization Near the Ferroelectric-Paraelectric Transition in NaNO2

Sarikaya

Yurtseven²

2013

High Temperature Materials and Processes

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The paraelectric-ferroelectric transition in NaNO 2 is studied using the Levanyuk-Sannikov and the mean field models which we have developed here. From both models, the temperature dependence of the spontaneous polarization is derived and is fitted to the experimental data from the literature.Our results show that both mean field models are adequate to describe the observed behaviour of the spontaneous polarization close to the paraelectric-ferroelectric transition in NaNO 2 . The two models are compared in regard to the transition mechanism in this crystal.

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Section: Introductionmentioning

confidence: 99%

Temperature Dependence of the Spontaneous Polarization Near the Ferroelectric-Paraelectric Transition in NaNO2

Sarikaya

Yurtseven²

2013

High Temperature Materials and Processes

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“…The room temperature phase of NaN02 (F-phase) is known to be ferroelectric which transforms to the paraelectric high temperature phase (P-phase) at about 163°C [1]. The structure of the ferroelectric phase is shown in Figure 1 Na-ions at (xyz) switch into their alternate equilibrium position at (xyz).…”

Section: Introductionmentioning

confidence: 98%

X-ray structure determination of the modulated phase of NaNO₂

Böhm¹

1978

Zeitschrift für Kristallographie

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The structure determination of the modulated phase of NaN02 by X-ray methods was carried out by two independent ways. 1. The application of the satélite theory leads to a structure where the occupation factors of both equilibrium positions for the Na-ion and the N02-molecule are modulated by a sine function. The amplitude is d = 0.21. 2. The evaluation of Patterson maps of the complementary structure results in the same type of modulation with about the same amplitude.Auszug. An der modulierten Struktur des NaN02 wurde eine Strukturbestimmung mit Hilfe der Röntgenbeugung auf zwei verschiedene Arten durchgeführt. 1. Die Anwendung der Satellitentheorie führt zu einer Struktur, bei der die Besetzungswahrscheinlichkeiten der beiden Gleichgewichtspositionen für das Na-Ion und das N02-Molekül nach einer Sinusfunktion moduliert sind. Die Amplitude der Modulationsfunktion ist d-0,2\. 2. Die Auswertung von Patterson-Diagrammen der komplementären Struktur führt zum gleichen Modulationstyp mit etwa gleicher Amplitude.

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“…[7] At room temperature the space group is Im2m (Z=2). The spontaneous polarization vanishes at 437K, above which the incommensurate phase exists in a narrow temperature range (less than 2K).…”

Section: Introductionmentioning

confidence: 99%

Thermal Motion in Sodium Nitrite: The Temperature Dependence of Debye-Waller Factors

et al. 2002

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In order to understand the relation between the transition mechanism and the thermal vibration, the temperature dependence of the Debye-Waller factor is investigated in NaNO 2 by single-crystal X-ray diffractometry. The crystal parameters are refined by least squares calculations both in paraelectric and ferroelectric phases. The maximum entropy method is also employed to estimate the spontaneous polarization. The Debye-Waller factor displays a minor anomaly at the order-disorder transition point. The result is compared with K 2 SeO 4 , a typical displacive crystal.

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Ferroelectricity in NaNO2

Cited by 187 publications

References 5 publications

Temperature Dependence of the Spontaneous Polarization Near the Ferroelectric-Paraelectric Transition in NaNO2

Temperature Dependence of the Spontaneous Polarization Near the Ferroelectric-Paraelectric Transition in NaNO2

X-ray structure determination of the modulated phase of NaNO₂

Thermal Motion in Sodium Nitrite: The Temperature Dependence of Debye-Waller Factors

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Ferroelectricity in NaNO2

Cited by 187 publications

References 5 publications

Temperature Dependence of the Spontaneous Polarization Near the Ferroelectric-Paraelectric Transition in NaNO2

Temperature Dependence of the Spontaneous Polarization Near the Ferroelectric-Paraelectric Transition in NaNO2

X-ray structure determination of the modulated phase of NaNO2

Thermal Motion in Sodium Nitrite: The Temperature Dependence of Debye-Waller Factors

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Product

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X-ray structure determination of the modulated phase of NaNO₂