Crystal growth X-ray diffraction, structure transition of BaTiO3 결과보고서

본 내용은 " Crystal growth X-ray diffraction, structure transition of BaTiO3 결과보고서 " 의 원문 자료에서 일부 인용된 것입니다. 2023.04.06

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• 1. Crystal growth & X-ray diffraction

  고상소결법을 통해 BaTi, CaTi, SrTi를 제작하고 X-ray diffraction을 이용하여 시료를 측정함으로써 회절패턴을 관측하였다. 이를 통해 시료의 격자구조를 분석하고 이론값과 실험값을 비교하여 오차가 발생한 원인을 고찰하였다.

• 2. Structure transition of BaTi

  BaTi의 온도에 따른 전기용량의 변화를 측정하고 이를 통해 유전상수를 계산하여 상전이가 일어나는 지점을 파악하였다.

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• 1. Crystal growth & X-ray diffraction

  Crystal growth and X-ray diffraction are two closely related topics in materials science and solid-state physics. Crystal growth is the process of forming a crystalline solid material from a liquid, gas, or solution. It is a fundamental process in the synthesis of many materials, including semiconductors, ceramics, and metals. X-ray diffraction, on the other hand, is a powerful technique used to study the atomic and molecular structure of crystalline materials. By analyzing the patterns of X-ray diffraction, researchers can determine the crystal structure, lattice parameters, and even the presence of defects or impurities in a material. The study of crystal growth and X-ray diffraction is crucial for understanding the properties and behavior of materials at the atomic and molecular level. By controlling the growth conditions and understanding the crystal structure, researchers can tailor the properties of materials to meet specific needs, such as in the development of new electronic devices, energy storage systems, or catalysts. Additionally, X-ray diffraction is widely used in materials characterization, allowing researchers to investigate the structure and composition of a wide range of materials, from metals and ceramics to biological molecules and nanomaterials. Overall, the study of crystal growth and X-ray diffraction is a fundamental aspect of materials science and solid-state physics, with far-reaching applications in various fields of science and technology.

• 2. Structure transition of BaTi

  The structural transition of barium titanate (BaTi) is a fascinating topic in materials science and solid-state physics. Barium titanate is a ferroelectric material, meaning it exhibits a spontaneous electric polarization that can be reversed by the application of an external electric field. This property makes BaTi a widely used material in various electronic devices, such as capacitors, piezoelectric sensors, and actuators. The structural transition in BaTi is particularly interesting because it involves a change in the crystal structure of the material as a function of temperature. At room temperature, BaTi has a tetragonal crystal structure, but as the temperature is increased, the material undergoes a phase transition to a cubic structure. This phase transition is accompanied by changes in the material's physical properties, such as its dielectric constant, piezoelectric coefficient, and ferroelectric behavior. Understanding the structural transition in BaTi is crucial for optimizing the material's performance in various applications. By studying the factors that influence the phase transition, such as temperature, pressure, and chemical composition, researchers can develop strategies to tailor the material's properties and improve its performance in specific devices. Additionally, the study of structural transitions in ferroelectric materials like BaTi provides valuable insights into the fundamental mechanisms underlying phase transformations in solids, which have broader implications in materials science and condensed matter physics. In summary, the structural transition of barium titanate is a fascinating and important topic in materials science, with significant implications for the development of advanced electronic and energy-related technologies.