Overview​​

The Ferromagnetic Resonance (FMR) Instrument consists of a resonant microwave Coplanar Waveguide (CPW) placed within an electromagnet. The instrument will detect the bulk magnetisation dynamics of a magnetic thin film sample, from which its saturation magnetisation, intrinsic damping, and gyromagnetic ratio, for example, can be extracted.​​

Common Research Applications

• Thin film magnetism

• Spin pumping

• Spin and inverse spin Hall effect

• Spintronics or magneto-electronics
  

• Cryo-FMR

• Cavity-FMR

• FMR-PNR​
  

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Specifications

• Dipolar electromagnet for in-plane measurements up to 0.5 T

• TENMA 72-685X power supply with a current range up to 10 A, voltage range up to 35 V and power range up to 175 W

• Hall probe for measuring the field strength at the sample

• ZNB20 Rohde & Schwarz Vector Network Analyser with a wide dynamic range up to 140 dB and a frequency range of 300 kHz to 20 GHz. Additional variables of microwave power, sweep time and bandwidth.​
  

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Measurement Packages

LabVIEW programme for complete instrument coordination and cont​rol in an automated, timed sequence.​

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Measurement Options

• Frequency-field

• Field sweeps

• Variable temperature FMR

• Temperature gradient FMR​