The method of choice for in-depth investigation of the magnetic anisotropy in molecular nanomagnets is high-frequency electron spin resonance (HFESR) spectroscopy. It has the benefits of high resolution and facile access to large energy splittings. However, the sensitivity is limited to about 107 spins for a reasonable data acquisition time. In contrast, methods based on the measurement of the deflection of a cantilever were shown to enable single spin magnetic resonance sensitivity. In the area of molecular nanomagnets, the technique of torque detected electron spin resonance (TDESR) has been used sporadically. Here, we explore the applicability of that technique by investigating molecular nanomagnets with different types of magnetic anisotropy. We also assess different methods for the detection of the magnetic torque. We find that all types of samples are amenable to these studies, but that sensitivities do not yet rival those of HFESR.
%0 Journal Article
%1 magnetochemistry2020025
%A Dörfel, María
%A Kern, Michal
%A Bamberger, Heiko
%A Neugebauer, Petr
%A Bader, Katharina
%A Marx, Raphael
%A Cornia, Andrea
%A Mitra, Tamoghna
%A Müller, Achim
%A Dressel, Martin
%A Bogani, Lapo
%A van Slageren, Joris
%D 2016
%J Magnetochemistry
%K from:michalkern
%N 2
%P 25
%R 10.3390/magnetochemistry2020025
%T Torque-Detected Electron Spin Resonance as a Tool to Investigate Magnetic Anisotropy in Molecular Nanomagnets
%U http://www.mdpi.com/2312-7481/2/2/25
%V 2
%X The method of choice for in-depth investigation of the magnetic anisotropy in molecular nanomagnets is high-frequency electron spin resonance (HFESR) spectroscopy. It has the benefits of high resolution and facile access to large energy splittings. However, the sensitivity is limited to about 107 spins for a reasonable data acquisition time. In contrast, methods based on the measurement of the deflection of a cantilever were shown to enable single spin magnetic resonance sensitivity. In the area of molecular nanomagnets, the technique of torque detected electron spin resonance (TDESR) has been used sporadically. Here, we explore the applicability of that technique by investigating molecular nanomagnets with different types of magnetic anisotropy. We also assess different methods for the detection of the magnetic torque. We find that all types of samples are amenable to these studies, but that sensitivities do not yet rival those of HFESR.
@article{magnetochemistry2020025,
abstract = {The method of choice for in-depth investigation of the magnetic anisotropy in molecular nanomagnets is high-frequency electron spin resonance (HFESR) spectroscopy. It has the benefits of high resolution and facile access to large energy splittings. However, the sensitivity is limited to about 107 spins for a reasonable data acquisition time. In contrast, methods based on the measurement of the deflection of a cantilever were shown to enable single spin magnetic resonance sensitivity. In the area of molecular nanomagnets, the technique of torque detected electron spin resonance (TDESR) has been used sporadically. Here, we explore the applicability of that technique by investigating molecular nanomagnets with different types of magnetic anisotropy. We also assess different methods for the detection of the magnetic torque. We find that all types of samples are amenable to these studies, but that sensitivities do not yet rival those of HFESR.},
added-at = {2020-10-12T12:37:15.000+0200},
author = {Dörfel, María and Kern, Michal and Bamberger, Heiko and Neugebauer, Petr and Bader, Katharina and Marx, Raphael and Cornia, Andrea and Mitra, Tamoghna and Müller, Achim and Dressel, Martin and Bogani, Lapo and van Slageren, Joris},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/213223bd4530eef80ecec0ef95bb6d106/iis},
doi = {10.3390/magnetochemistry2020025},
interhash = {3785b5b500ffd39a2c984a180781a1c8},
intrahash = {13223bd4530eef80ecec0ef95bb6d106},
issn = {2312-7481},
journal = {Magnetochemistry},
keywords = {from:michalkern},
number = 2,
pages = 25,
timestamp = {2020-10-12T10:37:15.000+0200},
title = {Torque-Detected Electron Spin Resonance as a Tool to Investigate Magnetic Anisotropy in Molecular Nanomagnets},
url = {http://www.mdpi.com/2312-7481/2/2/25},
volume = 2,
year = 2016
}
