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Materials with significant spin-orbit coupling enable efficient spin-to-charge interconversion, which can be utilized in novel spin electronic devices. A number of elements, mainly heavy metals (HMs), have been identified to produce a sizable spin current (<inline-formula> <tex-math notation="LaTeX">${j}_{s}$ </tex-math></inline-formula>), while supplied with a charge current (<inline-formula> <tex-math notation="LaTeX">${j}$ </tex-math></inline-formula>), detected mainly in the neighboring ferromagnetic (FM) layer. Apart from the spin Hall angle <inline-formula> <tex-math notation="LaTeX">$\theta _{\text {SH}}\,\,= {j}_{s}/{j}$ </tex-math></inline-formula>, spin Hall conductivity (<inline-formula> <tex-math notation="LaTeX">$\sigma _{\text {SH}}$ </tex-math></inline-formula>) is an important parameter, which takes also the resistivity of the material into account. In this work, we present a measurement protocol of the HM/FM bilayers, which enables for a precise <inline-formula> <tex-math notation="LaTeX">$\sigma _{\text {SH}}$ </tex-math></inline-formula> determination. Static transport measurements, including resistivity and magnetization measurements, are accompanied by the angular harmonic Hall voltage analysis in a dedicated low-noise rotating probe station. Dynamic characterization includes effective magnetization and magnetization damping measurement, which enable HM/FM interface absorption calculation. We validate the measurement protocol in Pt and Pt-Ti underlayers in contact with FeCoB and present <inline-formula> <tex-math notation="LaTeX">$\sigma _{\text {SH}}$ </tex-math></inline-formula> of up to <inline-formula> <tex-math notation="LaTeX">${3.3}\,\times \,{10}^{{5}}$ </tex-math></inline-formula> S/m, which exceeds the values typically measured in other HM, such as W or Ta.

Angular Harmonic Hall Voltage and Magnetoresistance Measurements of Pt/FeCoB and Pt-Ti/FeCoB Bilayers for Spin Hall Conductivity Determination