This dataset supports the manuscipt Tokac M., Bunyaev S.A., Kakazei G.N., Schmool D.S., Atkinson D., and Hindmarch A.T., 'Interfacial Structure Dependent Spin Mixing Conductance in Cobalt Thin Films', Phys. Rev. Lett. 115, 056601 (2015).

A description of the data and file formats is included below.
Please contact Aidan Hindmarch <a.t.hindmarch@durham.ac.uk> with any questions.


--- Experimental data ---

Ferromagnetic resonance data is extracted from frequency sweeps at fixed field using vector network analyzed with the sample placed face down on a coplanar waveguide, as described in the manuscript. 

X-ray diffraction data is derived from diffraction peak positions using the Bragg equation. XRD data is given in data for Figure 2c, described in the section below.

Data directory is subdivided into directories containing FMR data for films with Cu overlayer and films with Ir overlayer.
These are then subdivided into directories for: 
Magnetic field dependence of FMR linewidth
Magnetic field dependence of resonance frequency

Filenames within these directories are named Co{t}{OL}_{TYPE}.dat 
where:
{t} is the cobalt layer thickness in nm (2-5 represents 2.5 nm)
{OL} is the overlayer material, Cu or Ir
{TYPE} describes the dataset contained

All files are TAB delimited ascii and may have a header containig the quantity and/or units for each column.

For files where {TYPE} is 'Kittel': First column is magnetic field (A/m), second column is resonance frequency (GHz)
For files where {TYPE} is 'LW': First column is resonance frequency (GHz), second column is FMR linewidth (T)


--- Figure files ---

This directory contains the data for each figure in the manuscript (Figure 1 is a diagram). All files are again TAB delimited ascii and may have a header containig the quantity and/or units for each column. Fits shown in the figures are not included.

Figure_2a.dat: Column 1 is inverse cobalt layer thickness (nm^-1), column 2,3 are effective magnetization and error for Cu overlayer, column 4,5 are effective magnetization and error for Ir overlayer.
Figure_2a_inset.dat: Column 1 is magnetic field (kOe), column 2 is resonance frequency (GHz) for Co55Ir sample.
Figure_2b.dat: Column 1 is inverse cobalt layer thickness (nm^-1), column 2,3 are Lande g-factor and error for Cu overlayer, column 4,5 are Lande g-factor  and error for Ir overlayer.
Figure_2c.dat: Column 1 is inverse cobalt layer thickness (nm^-1), column 2,3 is Co interplanar spacing from XRD and error for Cu overlayer, column 4,5 is Co interplanar spacing from XRD and error for Ir overlayer.

Figure_3.dat: Column 1 is inverse cobalt layer thickness (nm^-1), column 2,3 are damping parameter (alpha) and error for Cu overlayer, column 4,5 are damping parameter (alpha) and error for Ir overlayer.

Figure_4.dat: Column 1 is inverse cobalt layer thickness (nm^-1), column 2,3 are derived quantity 4*pi*M_s*(alpha-alpha_0)/(g*mu_B) and error for Cu overlayer, column 4,5 are derived quantity 4*pi*M_s*(alpha-alpha_0)/(g*mu_B) and error for Ir overlayer.