XAFS study of CoxTi₁-xO₂-x-anatase

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Physica Scripta, T115:597-599

DOI:https://doi.org/10.1238/Physica.Topical.115a00597· OSTI ID:946403

Heald, Steve M.; Chambers, Scott A.; Droubay, Timothy C.

Co doped TiO₂ anatase is a promising candidate dilute magnetic semiconductor (DMS). DMS materials have potential applications in spintronics devices. These utilize the spin of carriers, and offer the promise of new devices with enhanced functionality. The application of DMS materials to spintronics is as spin injectors. These materials can have spin-polarized states in their valence or conduction bands. At interfaces with nonmagnetic semiconductors they can then be used for spin polarized carrier injection, allowing for the fabrication of novel devices utilizing spin. Theory and measurements indicate that they can be much more efficient spin injectors than ferromagnetic metals. This report describes some recent XAFS studies of these materials using the PNC-CAT beamlines at the APS.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 946403
• Report Number(s): PNNL-14575; KC0203010
• Journal Information: Physica Scripta, T115:597-599, Journal Name: Physica Scripta, T115:597-599 Vol. T115; ISSN 0031-8949; ISSN PHSTBO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
COBALT OXIDES
DOPED MATERIALS
MAGNETIC SEMICONDUCTORS
TITANIUM OXIDES
X-RAY SPECTROSCOPY