title: ÐÐ¸ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð¸ ÑÐ°Ð·Ð¾Ð²ÑÐµ Ð¿ÐµÑÐµÑ Ð¾Ð´Ñ Ð² ÑÐµÐ³Ð½ÐµÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð°Ñ
title: Ð½Ð°ÑÑÐ½ÑÐ¹ Ð´Ð¾ÐºÐ»Ð°Ð´
titleType: Subtitle
title: Dielectric properties and phase transitions in ferroelectric composite materials
Creators: name: ÐÐ»ÐµÐºÑÐµÐµÐ²Ð°, ÐÐ»ÑÐ³Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¡ÐµÐ³Ð½ÐµÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÐºÐ¸
ÐÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
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Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÑ
Ð¿Ð¾ÑÐ¸ÑÑÐ¾Ðµ ÑÑÐµÐºÐ»Ð¾
Ð¼ÑÐ»ÑÑÐµÑÐµÑÑÐ¾Ð¸ÐºÐ¸
Ð´Ð¸ÑÑÐ°ÐºÑÐ¸Ñ ÑÐ¸Ð½Ñ ÑÐ¾ÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ñ

description: ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½Ð¾Ð¹ ÑÐ²Ð¾Ð»ÑÑÐ¸Ð¸ ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ñ ÑÑÑÑÐºÑÑÑÑ ÑÐµÐ³Ð½ÐµÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾Ð»Ð¸ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð² Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¼ÐµÑÐ¸ Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð² (1-x)NaNO2+(x)BaTiO2 (Ñ=0.05, 0.1), (1-Ñ)KNO3+(Ñ)BaTiO3 (x=0.25, 0.5, 0.53), (1-x)NaNO2+(x)KNO2 (x=0.05, 0.1, 0.2), Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ° Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ NaNO2, Ð²Ð½ÐµÐ´ÑÐµÐ½Ð½Ð¾Ð³Ð¾ Ð² Ð¿Ð¾ÑÐ¸ÑÑÐ¾Ðµ ÑÑÐµÐºÐ»Ð¾ Ð¾Ñ ÑÑÐµÐ´Ð½Ð¸Ð¼ ÑÐ°Ð·Ð¼ÐµÑÐ¾Ð¼ Ð¿Ð¾Ñ 20 Ð¸ 46 Ð½Ð¼, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¼ÑÐ»ÑÑÐ¸ÑÐµÑÑÐ¾Ð¸Ð´Ð½ÑÑ ÑÐ²ÐµÑÐ´ÑÑ ÑÐ°ÑÑÐ²Ð¾ÑÐ¾Ð² (1-Ñ)(PbFe2/3W1/3O3)-(Ñ)(PbTiO3) (Ñ=0.2 Ð¸ 0.3). Ð£ÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾, ÑÑÐ¾ Ð¿ÑÐ¸Ð¼ÐµÑÑ BaTiO3 Ð² ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ°Ñ (1-Ñ)NaNO2+(x)BaTiO3 Ð½Ðµ Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÐµÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð½Ð° ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½ÑÑ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ ÑÐµÐ³Ð½ÐµÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ° Ð¿Ð¾ÑÑÐ´ÐºÐ° NaNO2. ÐÑÑÐ²Ð»ÐµÐ½ Ð½Ð¸Ð·ÐºÐ¾ÑÐ°ÑÑÐ¾ÑÐ½ÑÐ¹ ÑÐµÐ»Ð°ÐºÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð¿ÑÐ¾ÑÐµÑÑ, ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÐ¹ Ñ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸ÐµÐ¹ ÐÐ°ÐºÑÐ²ÐµÐ»Ð»Ð°-ÐÐ°Ð³Ð½ÐµÑÐ°, Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑÐ¸Ð¹ Ðº Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ð¼Ñ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ñ Ð¿Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ Ñ ÑÐ¸ÑÑÑÐ¼ NaNO2 Ð´Ð¸ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¿ÑÐ¾Ð½Ð¸ÑÐ°ÐµÐ¼Ð¾ÑÑÐ¸ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¾Ð² Ð² ÑÐ°Ð¹Ð¾Ð½Ðµ Ð¢ ~420 Ð Ð¿ÑÐ¸ Ð½Ð°Ð³ÑÐµÐ²Ðµ. Ð£ÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾ Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ðµ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½Ð¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸ ÑÑÑÐµÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÐ³Ð½ÐµÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°Ð·Ñ Ð½Ð¸ÑÑÐ°ÑÐ° ÐºÐ°Ð»Ð¸Ñ Ð² ÑÑÐ¾ÑÐ¾Ð½Ñ ÐºÐ¾Ð¼Ð½Ð°ÑÐ½Ð¾Ð¹ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð² ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ°Ñ (1-Ñ)KNO3+(Ñ)BaTiO3 Ð¿Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ Ñ ÑÐ¸ÑÑÑÐ¼ KNO3. ÐÐ¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ Ð² ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ°Ñ (1-Ñ)NaNO2+(x)KNO2 Ð¿ÑÐ¸ Ñ=0.05, 0.1 Ð¸ 0.2 Ð¿ÑÐ¾Ð¸ÑÑÐ¾Ð´Ð¸Ñ ÑÐ´Ð²Ð¸Ð³ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ ÑÐ°Ð·Ð¾Ð²Ð¾Ð³Ð¾ Ð¿ÐµÑÐµÑÐ¾Ð´Ð° Ð² KNO2 Ð¿ÑÐ¸Ð¼ÐµÑÐ½Ð¾ Ð½Ð° 10-15 Ð. Ð£ÑÐ¾ÑÐ½ÐµÐ½Ð° ÑÐ°Ð·Ð¾Ð²Ð°Ñ Ð´Ð¸Ð°Ð³ÑÐ°Ð¼Ð¼Ð° Ð¼ÑÐ»ÑÑÐ¸ÑÑÐµÑÐ¾Ð¸Ð´Ð½ÑÑ ÑÐ²ÐµÑÐ´ÑÑ ÑÐ°ÑÑÐ²Ð¾ÑÐ¾Ð² (1-x)PbFe2/3W1/3O3+(x)PbTiO3Ñ=0.2 Ð¸ 0.3 Ð²Ð±Ð»Ð¸Ð·Ð¸ Ð¼Ð¾ÑÑÐ¾ÑÑÐ¾Ð¿Ð½Ð¾Ð¹ ÑÐ°Ð·Ð¾Ð²Ð¾Ð¹ Ð³ÑÐ°Ð½Ð¸ÑÑ. ÐÐ±Ð½Ð°ÑÑÐ¶ÐµÐ½Ñ Ð·Ð½Ð°ÑÐ¸ÑÐµÐ»ÑÐ½ÑÐµ ÑÐ°Ð·Ð»Ð¸ÑÐ¸Ñ Ð¼ÐµÐ¶Ð´Ñ Ð·Ð½Ð°ÑÐµÐ½Ð¸ÑÐ¼Ð¸ Ð»Ð¸Ð½ÐµÐ¹Ð½ÑÑ Ð¸ Ð¾Ð±ÑÐµÐ¼Ð½Ð¾Ð³Ð¾ ÐÐ¢Ð  Ð½Ð¸ÑÑÐ¸ÑÐ° Ð½Ð°ÑÑÐ¸Ñ, Ð²Ð½ÐµÐ´ÑÐµÐ½Ð½Ð¾Ð³Ð¾ Ð² Ð½Ð°Ð½Ð¾Ð¿Ð¾ÑÐ¸ÑÑÐ¾Ðµ ÑÑÐµÐºÐ»Ð¾ ÑÐ¾ ÑÑÐµÐ´Ð½Ð¸Ð¼ Ð´Ð¸Ð°Ð¼ÐµÑÑÐ¾Ð¼ Ð¿Ð¾Ñ 20 Ð¸ 46 Ð½Ð¼, Ð¸ Ð¼Ð°ÑÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð½Ð¸ÑÑÐ¸ÑÐ° Ð½Ð°ÑÑÐ¸Ñ Ð²ÑÑÐµ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ ÑÐµÐ³Ð½ÐµÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¤Ð Ð¿ÑÐ¸ Ð½Ð°Ð³ÑÐµÐ²Ðµ Ð¸ Ð¾ÑÐ»Ð°Ð¶Ð´ÐµÐ½Ð¸Ð¸.
description: The studies of temperature evolution of the crystal structure of ferroelectric polycrystalline composites based on a mixture of powders (1-x) NaNO2 + (x) BaTiO2 (x = 0.05, 0.1), (1) KNO3 + (x) BaTiO3 (x = 0.25, 0.5, 0.53) , (1-x) NaNO2 + (x) KNO2 (x = 0.05, 0.1, 0.2), nanocomposite based on NaNO2 embedded in porous glass with an average pore diameter of 20 and 46 nm and multiferroic solid solutions (1-x)(PbFe2/3W1/3O3)+(x)(PbTiO3) (x=0.2 and 0.3) were performed. It is established that the impurity of BaTiO3 in composites (1-x) of NaNO2 + (x) BaTiO3 does not effect on the temperature dependence of the ferroelectric order parameter of NaNO2. A low-frequency relaxation process associated with Maxwell-Wagner polarization is revealed, leading to a significant increase of the dielectric permittivity of the composites in the vicinity of T ~ 420 K in comparison with pure NaNO2. A significant increase of the temperature range where the ferroelectric phase of potassium nitrate exists toward room temperatures in composites (1-x) KNO3 + (x) BaTiO3 compared to pure KNO3 is established. The shift of phase transition temperature in KNO2 of about 10-15 K is shown in the composites (1-Ñ)NaNO2 + (x)KNO2 at x = 0.05, 0.1, and 0.2. The phase diagram of multiferroic solid solutions (1-x)PbFe2 /3W1/3O3 + (x)PbTiO at x = 0.2 and 0.3 has been specified near morphotropic phase boundary. Significant differences between the values of linear and bulk CTE of sodium nitrite embedded in nanoporous glass with an average pore diameter of 20 and 46 nm and massive sodium nitrite are found above Tc at heating and cooling.