Electron paramagnetic resonance detected via magnetization measurements

TL;DR

This paper demonstrates the detection of electron paramagnetic resonance in Fe8 single-molecule magnets through magnetization measurements using a Hall probe, highlighting the advantages of pulsed microwave experiments for spin control.

Contribution

It introduces a method to detect EPR via magnetization measurements and analyzes the results with a spin temperature model, advancing experimental techniques in molecular magnetism.

Findings

EPR detected via magnetization measurements at microwave frequencies

Pulsed microwave experiments improve spin excitation control

Quantitative analysis using spin temperature model

Abstract

Presented are magnetization measurements on a crystal of Fe8 single-molecule magnets using a Hall probe magnetometer. Irradiation with microwaves at frequencies of 92 and 110-120 GHz leads to the observation of electron paramagnetic resonance (EPR) detected via magnetization measurements. A quantitative analysis of the results are introduced by means of the spin temperature. It is shown that pulsed microwave experiments allow a better control over the spin excitation.