Paramagnetic resonance in La2NiMnO6 probed by impedance and lock-in detection techniques

•We report microwave absorption in La2NiMnO6 at 300 K using two cavity-less methods.•Magnetoimpedance and broadband resonance methods were used.•Sharp frequency dependent features appear while sweeping dc magnetic field.•Observed features in both methods reflect occurrence of paramagnetic resonance.•Data analysis indicates non-negligible orbital contribution of Ni2+ cation to Landé g-factor.