@article {47876,
	title = {Effect of magnetic nanoparticle shape on flux amplification in inductive coil magnetic resonance detection.},
	journal = {Journal of Applied Physics},
	year = {2016},
	month = {2016 Sep 14},
	pages = {104506-1-7},
	abstract = {<div>
<p>We model and analyze the effect of particle shape on the signal amplification in inductive coil magnetic resonance\&nbsp;detection\&nbsp;using the reversible transverse\&nbsp;magnetic susceptibility\&nbsp;of oriented magnetic nanostructures. Utilizing the single magnetic domain Stoner-Wohlfarth model of uniform magnetization rotation, we reveal that different ellipsoidal particle shapes can have a pronounced effect on the magnetic flux enhancement in\&nbsp;detection\&nbsp;configurations typical of magnetic resonance settings. We compare and contrast the prolate ellipsoids, oblate ellipsoids, and exchange-biased spheres and show that the oblate ellipsoids and exchange-biased spheres have a significantly higher flux amplification effect than the prolate ellipsoids considered previously. In addition, oblate ellipsoids have a much broader polarizing\&nbsp;magnetic fieldrange over which their transverse flux amplification is significant. We show the dependence of transverse flux amplification on magnetic resonance bias field and discuss the resulting signal-to-noise ratio of inductive magnetic resonance\&nbsp;detection\&nbsp;due to the magnetic\&nbsp;nanoparticle-filled\&nbsp;core of the magnetic resonance\&nbsp;detection\&nbsp;coil.</p>
</div>
},
	doi = {10.1063/1.4962451},
	author = {Barbic, Mladen and El Bidweihy, Hatem}
}
