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

Institut für Elektronenmikroskopie und Nanoanalytik (5190)

Publikation: Konferenzbeitrag › 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.

Originalsprache	englisch
Seiten	27
Publikationsstatus	Veröffentlicht - 2021
Veranstaltung	11th ASEM Workshop - via Zoom, Linz, Österreich Dauer: 20 Mai 2021 → 21 Mai 2021 https://asem.at/events/11th-asem-workshop/

Konferenz

Konferenz	11th ASEM Workshop
Kurztitel	11th ASEM Workshop
Land/Gebiet	Österreich
Ort	Linz
Zeitraum	20/05/21 → 21/05/21
Internetadresse	https://asem.at/events/11th-asem-workshop/

ASJC Scopus subject areas

Allgemeine Materialwissenschaften

Fields of Expertise

Advanced Materials Science

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)

Dieses zitieren

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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.",

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

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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.

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T2 - 11th ASEM Workshop

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