1) The document discusses determining the mean inner potential of magnetic nanoparticles (MNPs) using electron holography. 2) Electron holography is a technique that can be used to measure electrostatic potentials by recording the interference between electron waves that pass through a sample and reference waves. 3) Preliminary measurements have been made and work is ongoing to fully characterize the mean inner potential of MNPs using this technique.

1. Pramodh Yapa1
Azadeh Akhtari−Zavareh1
Nima Nateghi2
David Menard2
Arthur Yelon2
Karen Kavanagℎ1
É
IN A NUTSHELL
°
DETERMINING THE MEAN INNER POTENTIAL OF MNP
USING ELECTRON HOLOGRAPHY
ELECTRON HOLOGRAPHY
𝜙 𝑥
𝑉0 𝑥 𝑡 𝑥 𝐵⊥ 𝑥
𝜙 𝑥 = 𝑐𝑉0 𝑥 𝑡 𝑥 −
𝑒
ℏ
𝐵⊥ 𝑥 𝑡 𝑥 𝑑𝑥
REFERENCES
1. MnP nanoclusters embedded in GaP epitaxial films grown by organometallic vapor-phase epitaxy: A reciprocal space mapping
and transmission electron microscopy study. Samuel Lambert-Milot et al. 2012, J. Vac. Sci. Technol. A 30, 061510
2. Off-axis electron holography of ferromagnetic multilayer nanowires. Azadeh Akhtari-Zavareh et al. 2014, J. Appl. Phys. 116,
023902
MEASUREMENTS & RESULTS
±
ONGOING WORK
ACKNOWLEDGEMENTS
We thank NSERC for partial funding, and CFI, BCKDF, and
SFU for their support of 4DLabs
facilities used in this work