Epitaxial growth and properties of ferromagnetic co-doped TiO2 anatase

被引：394

作者：

Chambers, SA ^{[1
]}

Thevuthasan, S

Farrow, RFC

Marks, RF

Thiele, JU

Folks, L

Samant, MG

Kellock, AJ

Ruzycki, N

Ederer, DL

Diebold, U

机构：

[1] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA

[2] IBM Corp, Almaden Res Ctr, San Jose, CA USA

[3] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 21期

关键词：

D O I：

10.1063/1.1420434

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have used oxygen-plasma-assisted molecular-beam epitaxy (OPA-MBE) to grow CoxTi1-xO2 anatase on SrTiO3(001) for x=similar to0.01-0.10, and have measured the structural, compositional, and magnetic properties of the resulting films. Whether epitaxial or polycrystalline, these CoxTi1-xO2 films are ferromagnetic semiconductors at and above room temperature. However, the magnetic and structural properties depend critically on the Co distribution, which varies widely with growth conditions. Co is substitutional in the anatase lattice and in the +2 formal oxidation state in ferromagnetic CoxTi1-xO2. The magnetic properties of OPA-MBE grown material are significantly better than those of analogous pulsed laser deposition-grown material. (C) 2001 American Institute of Physics.

引用

页码：3467 / 3469

页数：3

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