A broadband Ferromagnetic Resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K
arXiv:1604.04688 · doi:10.1063/1.4946789
Abstract
A dipper probe for broadband Ferromagnetic Resonance (FMR) operating from 4.2 K to room temperature is described. The apparatus is based on a 2-port transmitted microwave signal measurement with a grounded coplanar waveguide. The waveguide generates a microwave field and records the sample response. A 3-stage dipper design is adopted for fast and stable temperature control. The temperature variation due to FMR is in the milli-Kelvin range at liquid helium temperature. We also designed a novel FMR probe head with a spring-loaded sample holder. Improved signal-to-noise ratio and stability compared to a common FMR head are achieved. Using a superconducting vector magnet we demonstrate Gilbert damping measurements on two thin film samples using a vector network analyzer with frequency up to 26 GHz: 1) A Permalloy film of 5 nm thickness and 2) a CoFeB film of 1.5 nm thickness. Experiments were performed with the applied magnetic field parallel and perpendicular to the film plane.
arXiv comment8 figures
References in corpus (6)
- Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Spin torque building blocks
- Spin dynamics in a superconductor / ferromagnet proximity system
- Single-shot time-domain studies of spin-torque-driven switching in magnetic tunnel junctions
- Coplanar waveguide based ferromagnetic resonance in ultrathin film magnetic nanostructures: impact of conducting layers
Cited by in corpus (7)
- Microwave resonances of magnetic skyrmions in thin film multilayers
- Magnetization dynamics and its scattering mechanism in thin CoFeB films with interfacial anisotropy
- A spin dynamics study in layered van der Waals single crystal, CrGeTe
- Tunable magnetization relaxation of Fe_{2}Cr_{1-x}Co_{x}Si half-metallic Heusler alloys by band structure engineering
- A versatile rotary-stage high frequency probe station for studying magnetic films and devices
- OpenFMR: A low-cost open-source broadband ferromagnetic resonance spectrometer
- Angle-resolved broadband ferromagnetic resonance apparatus enabled through a spring-loaded sample mounting manipulator