Giant room temperature ferromagnetism in rutile TiO2 implanted by Co

被引：4

作者：

Aktas, B ^{[1
]}

Yildiz, F ^{[1
]}

Rameev, B ^{[1
]}

Khaibullin, R ^{[1
]}

Tagirov, L ^{[1
]}

Özdemir, M ^{[1
]}

机构：

[1] Gebze Inst Technol, TR-41400 Gebze, Turkey

来源：

SECOND SEEHEIM CONFERENCE ON MAGNETISM, PROCEEDINGS | 2004年

关键词：

D O I：

10.1002/pssc.200405446

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Giant room temperature ferromagnetism has been observed, for the first time, in the Co ion- implanted rutile TiO2. The Co ions have been accelerated to 40 keV and implanted into TiO2 (100) and TiO2(001) substrates. Both as prepared and temperature annealed samples were studied by magnetic resonance technique in the temperature range of 4-300 K. Strongly anisotropic ferromagnetic resonance (FMR) signals have been observed in the as prepared (100) and (001) TiO2 samples. The theoretical analysis of FMR data has revealed rhombic magnetic anisotropy energy for Co-doped rutile TiO2. The temperature annealing drastically affects the magnetic properties of the samples resulting in disappearance of the ferromagnetism and formation of paramagnetic Co2+ centers.

引用

页码：3319 / 3323

页数：5

共 12 条

[1] Shape anisotropy of magnetic heterostructures [J].