Experimental and first principle study of room temperature ferromagnetism in carbon-doped rutile TiO2. (February 2019)

• Record Type: Journal Article
• Authors: Luitel, Homnath; Chettri, P.; Tiwari, A.; Sanyal, D.
• Is Part Of: Materials research bulletin. Volume 110(2019)
• Page Start: 13
• Page End: 17
• Publication Date: 2019-02
• Subjects: A. Semiconductors -- B. Magnetic properties -- D. Defects; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2018.10.004
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: Room temperature ferromagnetism has been experimentally observed in 1.2 MeV C 4+ ions irradiated rutile-TiO2 sample. Ab initio calculations predict carbon doping at oxygen site can induced strong ferromagnetic ordering in the rutile TiO2 . Presence of carbon atom at the interstitial site does not induce any magnetic moment in TiO2 system. Abstract: Room temperature ferromagnetism has been observed experimentally by implanting 1.2 MeV carbon on rutile TiO2 . Density functional theory has been employed to study the magnetic properties of different possible carbon-related defects in TiO2 . Theoretical calculation suggests carbon-doped at oxygen site (CO ) can induce a significant magnetic moment in rutile TiO2 . The 2p orbital electrons of the carbon atom are the primary source of the induced magnetic moment in TiO2 . The magnetic measurements using a SQUID magnetometer, at room temperature, confirmed the ferromagnetic behavior of carbon doped rutile TiO2 sample.