Thermal conductivity and specific heat capacity of undoped potassium sodium niobate (KNN) ceramics

original PDF and TIFF data from original research within the project MEET Precisely there are zip file called Kotrbova_et_al_2026_KNN_Open_Ceramics_raw_data Abbreviations:KNN - Potasium sodium niobateC - CerpotechAE - American Elementsm - monoclinico - ortorombic In this structure there is:raw_data_EDSElemental analysis of an approximately 50 × 50 μm area was performed using an energy-dispersive spectroscopy (EDS) analyzer equipped with an 80 mm² silicon drift detector (SDD) (X-MaxN, Oxford Instruments, United Kingdom) and AZtecEnergy software (Oxford Instruments, United Kingdom).Files - KNN samples_A_m_50_2026-06-11_17-43-47, KNN samples_A_m_50_2026-06-11_17-51-35, KNN samples_A_o_50_2026-06-11_17-52-15, KNN samples_A_o_50_2026-06-11_17-55-07, KNN samples_AE_50_2026-06-11_17-39-53, KNN samples_AE_50_2026-06-11_17-49-28, KNN samples_C_50_2026-06-11_17-36-13, KNN samples_C_50_2026-06-11_17-47-55 raw_data_LFAIn addition, the dataset contains thermal conductivity data as a function of temperature, measured in the range of 20–800 °C by laser flash analysis (LFA 1000, Linseis, Germany). The samples used for the LFA measurements had dimensions of approximately 0.5 × 0.5 cm, with a thickness of approximately 0.25 cm.Files - raw_data_LFA_KNN_AE, raw_data_LFA_KNN_C, raw_data_LFA_KNN_m, raw_data_LFA_KNN_o raw_data_SEMThe dataset further includes scanning electron microscopy (SEM) images of the investigated powders and samples. The specimens were polished and examined using SEM with a field-emission gun (FEG) electron source (LYRA3, Tescan, Czech Republic) at an acceleration voltage of 12–15 kV. Figures - Fig.1a_C-KNN_SEM_10um, Fig.1b_AE-KNN_SEM_10um, Fig.1c_o-KNN_SEM_10um, Fig.1d_m_KNN_SEM_10um, Fig.2a_AE-KNN_BSE_10um, Fig.2b_AE-KNN_BSE_2um raw_data_DSCIt also includes raw data from differential scanning calorimetry (DSC) measurements of 3 samples of C-KNN powder (596.8 mg, 623.41 mg, 497.47 mg) performed using a SETARAM Sensys EVO under a helium atmosphere, with heating and cooling rates of 10 °C/min over the temperature range of 50–800 °C. File - raw_data_DSC raw_data_XRDThis dataset contains the raw data obtained from X-ray diffraction (XRD) measurements of all investigated materials, including both powder samples and sintered specimens, measured at room temperature using a cobalt anode. File - raw_data_XRD