23 citations · 84 across the 8 of their papers we have counts for
8 papers
Direct identification of local doping effects in Barium-hexaferrite by electron vortex beams
Darius Pohl, Hitoshi Makino, Arthur Ernst +4
We demonstrate atomic-scale mapping of local magnetic moments and doping effects in Ti-doped barium hexaferrite (BaFe11TiO19) using atom-sized electron vortex beams (EVBs) with con…
Imaging atomic-scale magnetism with energy-filtered differential phase contrast method
Devendra Singh Negi, Peter A. van Aken, Jan Rusz
We propose differential phase contrast (DPC) imaging using energy-filtered electrons to image the magnetic properties of materials at the atomic scale. Compared to DPC measurements…
Enabling atomic resolution in convergent beam EMCD measurements by the use of patterned apertures
Hasan Ali, Devendra Negi, Tobias Warnatz +3
We give an experimental demonstration of two types of recently proposed ventilator apertures which can be used to acquire electron magnetic circular dichroic (EMCD) signals in zone…
Proposal for measuring magnetism with patterned apertures
Devendra Negi, Jakob Spiegelberg, Shunsuke Muto +5
We propose a magnetic measurement method utilizing a patterned post-sample aperture in a transmission electron microscope. While utilizing electron magnetic circular dichroism, the…
Proposal for a three-dimensional magnetic measurement method with nanometer-scale depth resolution
Devendra Negi, Lewys Jones, Juan-Carlos Idrobo +1
We propose a magnetic measurement method based on combining depth sectioning and electron magnetic circular dichroism in scanning transmission electron microscopy. Electron vortex…
Surface spin canting in Fe3O4 and CoFe2O4 nanoparticles probed by high resolution electron energy loss spectroscopy
D. S. Negi, H. Sharona, U. Bhat +3
High resolution electron energy loss spectroscopy (HR-EELS) is utilized to probe the surface spin canting in nanoparticles of two technologically important magnetic materials, i.e.…
Substrate induced tuning of compressive strain and phonon modes in large area MoS2 and WS2 van der Waals epitaxial thin films
Rajib Sahu, Dhanya Radhakrishnan, Badri Vishal +4
Large area MoS2 and WS2 van der Waals epitaxial thin films with complete control over number of layers including monolayer is grown by pulsed laser deposition utilizing slower grow…
Direct evidence of strong local ferroelectric ordering in a thermoelectric semiconductor
Leena Aggarwal, Jagmeet S. Sekhon, Satya N. Guin +5
It is thought that the proposed new family of multi-functional materials namely the ferroelectric thermoelectrics may exhibit enhanced functionalities due to the coupling of the th…