DOI: 10.6084/m9.figshare.29414729
title: Research data supporting "Modelling pulsed field magnetization of iron-based bulk superconductors"

description: A summary of the research data supporting "Modelling pulsed field magnetization of iron-based bulk superconductors".The dataset related to this publication ("Final Data for Paper.xlsx") can be opened in Microsoft Excel and is available at https://doi.org/10.6084/m9.figshare.29414729.<b>Sheet 1: "Figure 2"</b>Data used to produce Figure 2 of the manuscript; caption: "Figure 2. Measured in-field critical current density, Jc(B, T) data taken from a small sample of a representative K-doped Ba122 bulk. The data is input into the models using a two-variable, direct interpolation." See main manuscript (Section 2.2.1) for details regarding the measurements.<b>Sheet 2: "Figure 4"</b>Data used to produce Figure 4 of the manuscript; caption: "Figure 4. Measured specific heat, C(T), data taken from a small sample of a representative K-doped Ba122 bulk: (a) Mass specific heat in units [J/(kg·K)] and (b) Volumetric specific heat in units [J/(cm3·K)]. The mass specific heat is input into the models using a direct interpolation. For reference, measured C(T) of representative Ag-doped GdBCO [31] and HIP-processed, Ti-doped MgB2 [29] bulks that correspond to the respective trapped field records in those materials is also included." See main manuscript (Section 2.2.2) for details regarding the measurements for Ba122. The small Ba122 bulk sample measured had dimensions of 1.93 x 1.90 x 0.515 mm^3 and weighed 10.6 mg. The density is estimated as 5600 kg/m^3. (RE)BCO data provided by Prof. Hiroyuki Fujishiro, Iwate University, unpublished/private communication based on 10wt% Ag-containing GdBCO. The ideal mass density of the GdBCO bulk is 6380 kg/m^3. In the case of silver addition (10,500 kg/m^3), for example 10wt%, the mass density is estimated to be 6720 kg/m^3. Also considering the influence of the RE211 phase, we estimate the density as 6400 kg/m^3. MgB2 data referred to from MgB2(HIP-Ti20%) data published in Zou et al 2015 Supercond. Sci. Technol. 28 075009 [DOI: 10.1088/0953-2048/28/7/075009] with an assumed density of 2590 kg/m^3.<b>Sheet 3: "Figure 5"</b>Data used to produce Figure 5 of the manuscript; caption: "Figure 5. Magnetostatic model (ideal trapped field capability) for temperatures 5-30 K, as well as 33 K (close to measured Tc), for a 30 mm diameter, 6 mm thick K-doped Ba122 bulk, based on the representative Jc(B, T) data shown in Figure 2." The data was generated by COMSOL Multiphysics - see the main manuscript (Section 2.1) for details regarding the COMSOL model.<b>Sheet 4: "Figure 6"</b>Data used to produce Figure 6 of the manuscript; caption: "Simulated PFM results for the 30 mm diameter, 6 mm thick K-doped Ba122 bulk at 5, 10 and 20 K, for applied pulsed field magnitudes up to 3 T, at time t = 100τ = 2 s. Two cooling scenarios are considered: perfect cooling and finite cooling (see Section 2.2.2)." The data was generated by COMSOL Multiphysics - see the main manuscript (Section 2.2) for details regarding the COMSOL model.<b>Sheet 5: "Figure 7"</b>Data used to produce Figure 7 of the manuscript; caption: "Simulated trapped field distribution across the top surface of the 30 mm diameter, 6 mm thick K-doped Ba122 bulk at 5 K, for increasing applied pulsed field magnitudes from 0.5 to 3 T, at time t = 100τ = 2 s. The magnetic field at r = 0 mm corresponds to the values shown in Figure 6. Two cooling scenarios are considered: (a) perfect cooling and (b) finite cooling (see Section 2.2.2). The red arrow (see main text) indicates increasing magnetic flux penetration with increasing applied field, to full magnetization." The data was generated by COMSOL Multiphysics - see the main manuscript (Section 2.2) for details regarding the COMSOL model.<b>Sheet 6: "Fig7-supp-10K"</b>Supplementary data for Figure 7. This sheet follows the same format as Sheet 5, but the data was obtained for an operating temperature of 10 K. Similar figures to Figure 7 for 10 K are also provided. The data was generated by COMSOL Multiphysics - see the main manuscript (Section 2.2) for details regarding the COMSOL model.<b>Sheet 7: "Fig7-supp-20K"</b>Supplementary data for Figure 7. This sheet follows the same format as Sheet 5, but the data was obtained for an operating temperature of 20 K. Similar figures to Figure 7 for 20 K are also provided. The data was generated by COMSOL Multiphysics - see the main manuscript (Section 2.2) for details regarding the COMSOL model.<b>Sheet 8: "Figure 8, Table 3"</b>Data used to produce Figure 8 and Table 3 of the manuscript; captions: "Instantaneous average temperature during PFM for Top = 5 K, for increasing applied pulsed field magnitudes from 0.5 to 3 T. The finite cooling case, for Bapp = 1.5 T corresponding to the peak trapped field in Figure 6, is also included for reference." (Figure 8) and "Maximum average temperature, Tave,max, over the bulk cross-section and maximum temperature, Tmax, anywhere in the bulk during PFM at 5, 10 and 20 K, for increasing applied pulsed field magnitudes up to 3 T." (Table 3). The data was generated by COMSOL Multiphysics - see the main manuscript (Section 2.2) for details regarding the COMSOL model.