Growth and Investigation of Co-doped Anatase Films
EMSL Project ID
2246
Abstract
Spintronics [1] combines the electronic and the magnetic properties materials for designing novel devices such as MRAMs, or even a completely new type of logic [2]. Dilute magnetic semiconductors (DMS) belong to some of the most-promising materials in this rapidly-growing field. All ferromagnetic semiconductors investigated so far have a Curie temperature far too low for technical applications [3]. Very recent work by a Japanese group [4] showed that Co-doped TiO2 (anatase) films are ferromagnetic at room temperature. Scott Chambers' group at PNNL is able to grow Co-doped anatase (001) films with OPA-MBE. These films have magnetic and (probably) geometric properties that are far superior to ones grown with laser deposition reported in the original work [4]. Very little is known about these novel, yet very exciting material. We propose experiments that shall help understand the electronic, structural, magnetic, and surface properties of this system. The experiments will be conducted collaboratively with Scott Chambers at PNNL (Nancy Ruzycki will spend this summer at the EMSL), at Tulane and synchrotron radiation light sources. The work is partially funded from an ongoing, collaborative research project with EMSL scientists (DoE BES, DoE-EPSCoR University-National Lab partnership). (I have a problem submitting the full text. See attached file for specifics)
Project Details
Project type
Exploratory Research
Start Date
2001-04-26
End Date
2004-03-30
Status
Closed
Released Data Link
Team
Principal Investigator