Magnetic phase composition of strontium titanate implanted with iron ions

作者：Dulov E N^*; Ivoilov N G; Strebkov O A; Tagirov L R; Nuzhdin V I; Khaibullin R I; Kazan S; Mikailzade F A

来源：Materials Research Bulletin, 2011, 46(12): 2304-2307.

DOI：10.1016/j.materresbull.2011.08.057

• Nanostructures
• Magnetic properties
• Mossbauer spectroscopy

Thin magnetic films were synthesized by means of implantation of iron ions into single-crystalline (1 0 0) substrates of strontium titanate. Depth-selective conversion electron Mossbauer spectroscopy (DCEMS) indicates that origin of the samples magnetism is alpha-Fe nanoparticles. Iron-substituted strontium titanate was also identified but with paramagnetic behaviour at room temperature. Surface magneto-optical Kerr effect (SMOKE) confirms that the films reveal superparamagnetism (the low-fluence sample) or ferromagnetism (the high-fluence sample), and demonstrate absence of magnetic in-plane anisotropy. These findings highlight iron implanted strontium titanate as a promising candidate for composite multiferroic material and also for gas sensing applications.

• 出版日期2011-12