The Impact of High-Tension on the Orbital Mapping of Rutile by STEM-EELS

Michael Oberaigner; Daniel Knez; Stefan Löffler; Gerald Kothleitner

The Impact of High-Tension on the Orbital Mapping of Rutile by STEM-EELS

Michael Oberaigner, Daniel Knez, Stefan Löffler, Gerald Kothleitner

Institute of Electron Microscopy and Nanoanalysis (5190)

Research output: Contribution to conference › Abstract

Abstract

Recently, it was shown that scanning transmission electron microscopy (STEM) in combination with electron energy loss spectroscopy (EELS) allows for a real-space mapping of atomic orbitals of rutile at 80 kV [1]. The major challenge of such experiments is the inherently poor signal-to-noise ratio (SNR). We propose a reliable post processing path for mapping orbitals and demonstrate the mapping of orbitals for rutile at different operation voltages.
Due to the different bond lengths between titanium and oxygen, rutile exhibits orbitals which are rotated 90° to each other when viewed along the [001]-direction (Figure 1a). The specimen is prepared by wedge polishing and focused ion milling. The measurements are performed with a FEI Titan³ G2 equipped with a monochromator and Cs-corrector. The EELS signal is recorded by a K2 (Gatan) direct detection camera, which offers higher SNR through its much-improved detective quantum efficiency.

Original language	English
Pages	27
Publication status	Published - 2021
Event	11th ASEM Workshop - via Zoom, Linz, Austria Duration: 20 May 2021 → 21 May 2021 https://asem.at/events/11th-asem-workshop/

Conference

Conference	11th ASEM Workshop
Abbreviated title	11th ASEM Workshop
Country/Territory	Austria
City	Linz
Period	20/05/21 → 21/05/21
Internet address	https://asem.at/events/11th-asem-workshop/

ASJC Scopus subject areas

General Materials Science

Fields of Expertise

Advanced Materials Science

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)

Cite this

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title = "The Impact of High-Tension on the Orbital Mapping of Rutile by STEM-EELS",

abstract = "Recently, it was shown that scanning transmission electron microscopy (STEM) in combination with electron energy loss spectroscopy (EELS) allows for a real-space mapping of atomic orbitals of rutile at 80 kV [1]. The major challenge of such experiments is the inherently poor signal-to-noise ratio (SNR). We propose a reliable post processing path for mapping orbitals and demonstrate the mapping of orbitals for rutile at different operation voltages.Due to the different bond lengths between titanium and oxygen, rutile exhibits orbitals which are rotated 90° to each other when viewed along the [001]-direction (Figure 1a). The specimen is prepared by wedge polishing and focused ion milling. The measurements are performed with a FEI Titan³ G2 equipped with a monochromator and Cs-corrector. The EELS signal is recorded by a K2 (Gatan) direct detection camera, which offers higher SNR through its much-improved detective quantum efficiency.",

author = "Michael Oberaigner and Daniel Knez and Stefan L{\"o}ffler and Gerald Kothleitner",

year = "2021",

language = "English",

pages = "27",

note = "11th ASEM Workshop, 11th ASEM Workshop ; Conference date: 20-05-2021 Through 21-05-2021",

url = "https://asem.at/events/11th-asem-workshop/",

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TY - CONF

T1 - The Impact of High-Tension on the Orbital Mapping of Rutile by STEM-EELS

AU - Oberaigner, Michael

AU - Knez, Daniel

AU - Löffler, Stefan

AU - Kothleitner, Gerald

PY - 2021

Y1 - 2021

N2 - Recently, it was shown that scanning transmission electron microscopy (STEM) in combination with electron energy loss spectroscopy (EELS) allows for a real-space mapping of atomic orbitals of rutile at 80 kV [1]. The major challenge of such experiments is the inherently poor signal-to-noise ratio (SNR). We propose a reliable post processing path for mapping orbitals and demonstrate the mapping of orbitals for rutile at different operation voltages.Due to the different bond lengths between titanium and oxygen, rutile exhibits orbitals which are rotated 90° to each other when viewed along the [001]-direction (Figure 1a). The specimen is prepared by wedge polishing and focused ion milling. The measurements are performed with a FEI Titan³ G2 equipped with a monochromator and Cs-corrector. The EELS signal is recorded by a K2 (Gatan) direct detection camera, which offers higher SNR through its much-improved detective quantum efficiency.

AB - Recently, it was shown that scanning transmission electron microscopy (STEM) in combination with electron energy loss spectroscopy (EELS) allows for a real-space mapping of atomic orbitals of rutile at 80 kV [1]. The major challenge of such experiments is the inherently poor signal-to-noise ratio (SNR). We propose a reliable post processing path for mapping orbitals and demonstrate the mapping of orbitals for rutile at different operation voltages.Due to the different bond lengths between titanium and oxygen, rutile exhibits orbitals which are rotated 90° to each other when viewed along the [001]-direction (Figure 1a). The specimen is prepared by wedge polishing and focused ion milling. The measurements are performed with a FEI Titan³ G2 equipped with a monochromator and Cs-corrector. The EELS signal is recorded by a K2 (Gatan) direct detection camera, which offers higher SNR through its much-improved detective quantum efficiency.

M3 - Abstract

SP - 27

T2 - 11th ASEM Workshop

Y2 - 20 May 2021 through 21 May 2021

ER -