Microstrip Resonators and Broadband Lines for X-band EPR Spectroscopy of Molecular Nanomagnets View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2015-03-26

AUTHORS

Alberto Ghirri, Claudio Bonizzoni, Mattia Righi, Federico Fedele, Grigore Timco, Richard Winpenny, Marco Affronte

ABSTRACT

We present a practical setup to perform continuous-wave X-band electron paramagnetic resonance spectroscopy by using planar microstrip lines and general purpose instrumentation. We fabricated Ag/alumina and Nb/sapphire microstrip resonators and transmission lines and compared their performance down to 2 K and under applied magnetic field. We used these devices to study single crystals of molecular Cr3\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$_{3}$$\end{document} nanomagnets. By means of X-band planar resonators we measured angle-dependent spectra at fixed frequency, while broadband transmission lines were used to measure continuous wave spectra with varying frequency in the range 2–25 GHz. The spectra acquired at low temperatures allowed to extract the essential parameters of the low-lying energy levels of Cr3\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$_{3}$$\end{document} and demonstrate that this method is particularly suitable to study small crystals of molecular nanomagnets. More... »

PAGES

749-756

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00723-015-0672-5

DOI

http://dx.doi.org/10.1007/s00723-015-0672-5

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1008470034


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