Magnetic property measurements were performed with powder mounted in a brass sample holder in a Quantum Design Magnetic Property Measurement System (MPMS3) vibrating sample magnetometer. For heat capacity measurements, collected using a Quantum Design Physical Property Measurement System (PPMS), powder was dry pressed and mounted with Apiezon N-grease. Energy dis-persive X-ray fluorescence spectrometry (XRF) was performed on sample powders with a Shimadzu EDX-7000 spectrometer. A Kratos Axis Ultra, calibrated with Cu 2p 3/2 and Au 4f 7/2 standards, was used for X-ray photoelectron spectroscopy (XPS). Binding energy referencing was made to the C 1s peak (285.0 eV). A Cary 5000 spectrophotometer was used for UV-vis diffuse reflectance data.