Publication detail

High-frequency EPR: current state and perspectives

SOJKA, A. ŠEDIVÝ, M. LAGUTA, O. MARKO, A. SANTANA, V. NEUGEBAUER, P.

Original Title

High-frequency EPR: current state and perspectives

Type

book chapter

Language

English

Original Abstract

Starting from its discovery, electron paramagnetic resonance (EPR) is a constantly developing technique following technological advances in generation and detection of microwaves, creation of strong magnetic fields, and fast digitalization, among others. In this chapter, we discuss developments in the field of high-frequency EPR (HFEPR) with a special focus on experiments in frequency domain compared to traditional field domain EPR. We present significant progress in the experimental determination of Zeeman dia- grams (frequency vs. field EPR maps) and discuss the advantages of HFEPR for investi- gating high-spin systems, particularly single-molecular magnets (SMMs). Besides, we dedicate a section to discuss the advances in the studies of the cyclotron resonance in thin-films and modern solid-state materials like graphene (graphite). Furthermore, the importance of HFEPR for dynamic nuclear polarisation (DNP) is discussed. At last, we demonstrate the possibility to access very short relaxation times (B1 ns) by implementing frequency rapid scans, emphasizing the power of frequency domain EPR. This technique allowed to perform, for the first time, multi-frequency relaxation studies in a single spectrometer in frequencies above 100 GHz.

Keywords

high-frequency electron paramagnetic resonance; spectrometer; Zeeman dia- grams; single-molecular magnets; dynamic nuclear polarisation; relaxation time

Authors

SOJKA, A.; ŠEDIVÝ, M.; LAGUTA, O.; MARKO, A.; SANTANA, V.; NEUGEBAUER, P.

Released

25. 11. 2020

Publisher

The Royal Society of Chemistry

Location

Cambridge

ISBN

978-1-83916-171-1

Book

Electron Paramagnetic Resonance

Edition number

27

Pages from

214

Pages to

252

Pages count

39

URL

https://pubs.rsc.org/en/content/chapter/9781839162534-00214/978-1-83916-253-4

BibTex

@inbook{BUT166179,
  author="Antonín {Sojka} and Matúš {Šedivý} and Oleksii {Laguta} and Andriy {Marko} and Vinicius Tadeu {Santana} and Petr {Neugebauer}",
  title="High-frequency EPR: current state and
perspectives",
  booktitle="Electron Paramagnetic Resonance",
  year="2020",
  publisher="The Royal Society of Chemistry",
  address="Cambridge",
  edition="27",
  pages="214--252",
  doi="10.1039/9781839162534-00214",
  isbn="978-1-83916-171-1",
  url="https://pubs.rsc.org/en/content/chapter/9781839162534-00214/978-1-83916-253-4"
}