Analytical Instrument Documents

rss

JEOL Resources

Documentation in support of your JEOL product.

Strong interaction between light and electrons (4) "Transmission ESR/FMR measurement method"

Interaction between microwave photon and spins means in other words, interaction between resonating photon in a closing space and spins. Thus, measuring spectra using a non-resonant device can prevent the Purcell effect or strong coupling from distortion of intrinsic spectra. Figure 1(a) is a drawing expressing a typical spectroscopy. A light source irradiates light to a sample, and transmitted light is detected. A simple and non-resonant wave guide, as shown in Fig.1(b), can provide absorption spectra of para- and ferromagnetic samples which have a high spin density.

Fig.1 (a) A drawing of transmit absorption measurement. (b) An example of transmission ESR/FMR measuring device using a wave guide.

Fig.1 (a) A drawing of transmit absorption measurement. (b) An example of transmission ESR/FMR measuring device using a wave guide.

Transmission FMR spectrum

Spectra in Fig.2 are an FMR spectra of YIG-thin film (20μm thickness, conf. Application Note ER200008E  ) using a detection device as shown in Fig.1(b). Merits of this method are that tuning of the filling factor and magnetic modulation are not necessary. Furthermore, dependence of FMR spectra on the frequencies is easily obtained. Application Note ER200010 will explain it more.

Fig.2 An example of transmission FMR spectra using YIG thin film.

Fig.2 An example of transmission FMR spectra using YIG thin film.

Showing 0 Comment



Comments are closed.

Other Resources

The following resources are available for the JEOL Analytical Instruments:

Media

Corona - Glow Discharge (DART Ion Source)

February 22, 2020
2156