Magnetic order and magnetotransport in half-metallic ferrimagnetic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Mn</mml:mi><mml:mi>y</mml:mi></mml:msub><mml:msub><mml:mi>Ru</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:mi>Ga</mml:mi></mml:mrow></mml:math> thin films

The ruthenium content of half-metallic ${\mathrm{Mn}}_{2}{\mathrm{Ru}}_{x}\mathrm{Ga}$ thin films, with a biaxially strained inverse Heusler structure, controls the ferrimagnetism that determines their magnetic and electronic properties. An extensive study ${\mathrm{Mn}}_{y}{\mathrm{Ru}}_{x}\mathrm{Ga}$ films on MgO (100) substrates $1.8\ensuremath{\le}y\ensuremath{\le}2.6$ $x=0.5, 0.7 \mathrm{or} 0.9$, including crystallographic, order, magneto-transport, spin polarization, is undertaken to map specific composition-dependent properties in this versatile ternary system. A comparison experimental densities obtained from x-ray reflectivity calculated indicates full-site occupancy for all compositions, which implies chemical disorder. All moments lie Slater-Pauling plot slope 1 except $x=0.5$, $y=2.2$ exhibit compensation at ${T}_{\text{comp}}$ below 500 K. coercivity near exceeds 10 T. Increasing Mn or Ru raises ${T}_{\text{comp}}$, but increasing also decreases polarization determined by point contact Andreev reflection. Molecular-field theory used model temperature dependence net ferrimagnetic moment three principal exchange coefficients are deduced. Marked differences shape anomalous Hall magnetization hysteresis loops explained substantial canting small up ${40}^{\ensuremath{\circ}}$ relative $c$ axis zero field, result slight noncollinearity ${\mathrm{Mn}}^{4c}$ sublattice due competing intrasublattice interactions arising antisite disorder excess unit cell. Consequences reduced-spin an enhanced intrinsic contribution effect. systematic investigation physical as function $x$ $y$ will guide selection compositions meet requirements magnonic spintronic MRG-based devices.