1. ABOUT THE DATASET -------------------- Title: Dataset for 'Temperature Dependence of Magnetic Anisotropy and Domain Wall Tuning in BaTiO3(111)/CoFeB Multiferroics' Creator(s): Robbie G. Hunt[1,2], Kévin J. A. Franke[1], Paul S. Keatley[3], Philippa M Shepley[1,2], Matthew Rogers[1,2], Thomas A. Moore[1,2] Organisation(s): 1. University of Leeds. 2. Bragg centre for Materials Research. 3. University of Exeter Rights-holder(s):Unless otherwise stated, Copyright 2023 University of Leeds Publication Year: 2023 Description: This dataset accompanies the paper in the title, found at https://doi.org/10.1063/5.0157883. Temperature-dependent magnetometry used for plotting figures 2 and 3 was performed using a MPMS SQUID-VSM. Domain images in figure 4 and local hysteresis measurements used for figure 5 were performed using an Evico Kerr microscope with optical cryostat and heater stage attachments. Simulations were performed in MuMax3. Included in this dataset is the analyzed data used to obtain the plots in the main paper. Cite as: R. G. Hunt, K. J. A. Franke, P. S. Keatley, P. M. shepley, M. Rogers, T. A. Moore (2023): Dataset for "Temperature Dependence of Magnetic Anisotropy and Domain Wall Tuning in BaTiO$_3$(111)/CoFeB Multiferroics". [Dataset]. https://doi.org/10.5518/1349 Related publication: R. G. Hunt, K. J. A. Franke, P. S. Keatley, P. M. Shepley, M. Rogers, T. A. Moore; Temperature dependence of magnetic anisotropy and domain wall tuning in BaTiO3(111)/CoFeB multiferroics. APL Mater. 1 July 2023; 11 (7): 071112. https://doi.org/10.1063/5.0157883 Contact: Thomas Moore t.a.moore@leeds.ac.uk 2. TERMS OF USE --------------- Copyright 2023 University of Leeds. Unless otherwise stated, this dataset is licensed under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/. 3. PROJECT AND FUNDING INFORMATION ---------------------------------- itle: Voltage Control of Chiral Spin Structures Dates: 1 November 2018 - 30 November 2021 Funding organisation: Marie Sklodowska-Curie Horizon 2020 Grant no.: 750147 Title: EPSRC DTA Studentship Dates: 1 October 2019 - 1 October2023 Funding organisation: Engineering and Physical Sciences Research Council (EPSRC) Grant no.: EP/M000923/1 4. CONTENTS ----------- File listing - Figure 2 200mT field-cool.dat This file contains raw data used to obtain the field-cooled portion of figure 2. - Figure 2 200mT field-cool.dat This file contains raw data used to obtain the field-warmed portion of figure 2. - Figure 3.txt This file contains the processed data used to obtain figure 3. The saturation magnetization is obtained from saturating hysteresis loops and measurements of the sample area and thickness. - Figure 4 images This folder contains the raw images used to obtain figure 4. In each image, the temperature it was obtained at is indicated alongside a short-hand for the crystal phase at this temperature with 'R' being the rhombohedral phase, 'O' being the orthorhombic and 'T' being the tetragonal. - Figure 5.txt This file contains the data used to produce figure 5. This involved taking a hard axis hysteresis loop in the Kerr microscope, calculating the value of Hk, then converting this into the anisotropy using the values of saturation magnetization shown in figure 4. - Figure 6.txt This file contains the data used to produce figure 6. Lattice elongations on the (111) plane are calculated from measurements perform by Kwei et al., J. Phys. Chem. 1993, 97, 10, 2368–2377. - Figure 7 60 degree data.txt This file contains one half of the data shown in Figure 7. Included are the domain wall widths for the charged and uncharged domain wall configurations when the simulation is initiated with an angle of 60 degrees between the anisotropy directors. - Figure 7 120 degree data.txt This file contains one half of the data shown in Figure 7. Included are the domain wall widths for the charged and uncharged domain wall configurations when the simulation is initiated with an angle of 120 degrees between the anisotropy directors. 5. METHODS ---------- - Imaging and hysteresis loops presented were obtained by Kerr microscopy using an Evico Magneto-optical Kerr Microscope, described in 'Review of Scientific Instruments 88, 073701 (2017); https://doi.org/10.1063/1.4991820'. Image processing was primarily performed using the accompanying KerrLab software package, with some additional processing of polarized images performed using ImageJ available for free online. Optical cryostat and heater stage attachments were used to perform temperature-dependent imaging. - Simulations were performed using the micromagnetic MuMax3 software package, for more detail see 'AIP Advances 4, 107133 (2014); https://doi.org/10.1063/1.4899186'. - Magnetometry was performed using a Quantum Design MPMS3 Magnetometer.