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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for obtaining three-relaxation-state ferroelectric ceramic with wide temperature range and high dielectric constant
The invention discloses a method for obtaining three-relaxation-state ferroelectric ceramic with a wide temperature range and a high dielectric constant, and relates to the field of electronic materials. The method comprises the following steps: determining an ion-doped barium titanate system as BCyTSx, wherein x and y respectively refer to the percentage of BaSnO3 and CaTiO3 in the amount of substance of the whole BCyTSx, x is more than or equal to 0 and less than or equal to 0.2, and y is equal to 0, 0.1 and 0.22; designing a three-relaxation-state barium titanate ceramic material accordingto the percentage of doped ions from small to large; preparing a barium titanate ceramic material and carrying out Curie-Weiss fitting on the barium titanate ceramic material; analyzing the barium titanate ceramic material, and finding a multiphase coexistence region of a monoclinic phase, a quadrature phase and a rhombus phase of a sample. When the sample has relaxation characteristics and the multiphase coexistence region at the same time, the ferroelectric ceramic composition corresponding to a relaxation phase transformation point and a three-critical point is the three-relaxation-state ferroelectric ceramic material. The method has universality in the field of ferroelectric ceramic materials.
本发明公开了获得宽温域高介电常数的三弛豫态铁电陶瓷的方法，涉及电子材料领域，包括：确定掺杂了离子的钛酸钡体系为BCyTSx，其中，x、y分别指的是BaSnO3、CaTiO3所占BCyTSx整体的物质的量的百分比，0≤x≤0.2，y＝0，0.1，0.22；按掺杂离子百分比从小到大的顺序设计三弛豫态钛酸钡系陶瓷材料；制备钛酸钡系陶瓷材料并进行Curie‑Weiss拟合；对钛酸钡系陶瓷材料进行分析，找到样品的单斜相、正交相和菱形相的多相共存区域，当有样品同时具备弛豫特性和多相共存区域，此时对应弛豫相变点和三临界点的铁电陶瓷组成成分即为三弛豫态铁电陶瓷材料。本发明在铁电陶瓷材料领域具有普遍性。
Method for obtaining three-relaxation-state ferroelectric ceramic with wide temperature range and high dielectric constant
The invention discloses a method for obtaining three-relaxation-state ferroelectric ceramic with a wide temperature range and a high dielectric constant, and relates to the field of electronic materials. The method comprises the following steps: determining an ion-doped barium titanate system as BCyTSx, wherein x and y respectively refer to the percentage of BaSnO3 and CaTiO3 in the amount of substance of the whole BCyTSx, x is more than or equal to 0 and less than or equal to 0.2, and y is equal to 0, 0.1 and 0.22; designing a three-relaxation-state barium titanate ceramic material accordingto the percentage of doped ions from small to large; preparing a barium titanate ceramic material and carrying out Curie-Weiss fitting on the barium titanate ceramic material; analyzing the barium titanate ceramic material, and finding a multiphase coexistence region of a monoclinic phase, a quadrature phase and a rhombus phase of a sample. When the sample has relaxation characteristics and the multiphase coexistence region at the same time, the ferroelectric ceramic composition corresponding to a relaxation phase transformation point and a three-critical point is the three-relaxation-state ferroelectric ceramic material. The method has universality in the field of ferroelectric ceramic materials.
本发明公开了获得宽温域高介电常数的三弛豫态铁电陶瓷的方法，涉及电子材料领域，包括：确定掺杂了离子的钛酸钡体系为BCyTSx，其中，x、y分别指的是BaSnO3、CaTiO3所占BCyTSx整体的物质的量的百分比，0≤x≤0.2，y＝0，0.1，0.22；按掺杂离子百分比从小到大的顺序设计三弛豫态钛酸钡系陶瓷材料；制备钛酸钡系陶瓷材料并进行Curie‑Weiss拟合；对钛酸钡系陶瓷材料进行分析，找到样品的单斜相、正交相和菱形相的多相共存区域，当有样品同时具备弛豫特性和多相共存区域，此时对应弛豫相变点和三临界点的铁电陶瓷组成成分即为三弛豫态铁电陶瓷材料。本发明在铁电陶瓷材料领域具有普遍性。
Method for obtaining three-relaxation-state ferroelectric ceramic with wide temperature range and high dielectric constant
一种获得宽温域高介电常数的三弛豫态铁电陶瓷的方法
GAO JINGHUI (Autor:in) / WANG YAN (Autor:in) / XU JINGZHE (Autor:in) / LIU YONGBIN (Autor:in) / ZHONG LISHENG (Autor:in)
20.10.2020
Patent
Elektronische Ressource
Chinesisch
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