Infrared data supporting our paper on KNbO3 under pressure

This data set contains the processed FTIR spectra as displays in our paper. The zip file contains two subfolders: \spectra\ contains .txt files with the FTIR reflectivity spectra in a simple xy format, truncated to the exploitable energy range but otherwise unfiltered. The number in the filename is the pressure. \fit_reports\ contains *.fit files with fitting reports produced by the python 3 lmfit package. The function used for the fitting is based on the factorized form of the dielectric function with 11 modes, most of which are meant to capture spurious interferences and other artifacts. The main mode or interest, the antipolar Nb mode, is numbered '05'. The functions are defined in the functions.py file.本数据集包含本文中展示的经处理后的傅里叶变换红外光谱（FTIR, Fourier Transform Infrared Spectroscopy）。压缩包内含两个子文件夹： spectra 文件夹内存储了以简单xy格式保存的FTIR反射率光谱文本文件（.txt），数据已截断至可利用的能量范围，未进行额外滤波处理。文件名中的数字代表测试压力。 fit_reports 文件夹内包含由Python 3的lmfit软件包生成的拟合报告文件（*.fit）。本次拟合所使用的函数基于包含11个振动模式的介电函数因式分解形式，其中多数模式用于捕捉虚假干涉及其他伪影。本研究的核心目标模式——反极性铌（Nb）模式，编号为‘05’。 相关函数定义于functions.py文件中。