کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1490550 | 992328 | 2011 | 4 صفحه PDF | دانلود رایگان |
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 Mössbauer spectroscopy (DCEMS) indicates that origin of the samples magnetism is α-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.
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► The origin of RT-ferromagnetism in iron implanted strontium titanate.
► Metallic iron nanoclusters form during implantation and define magnetic behaviour.
► Paramagnetic at room temperature iron-substituted strontium titanate identified.
Journal: Materials Research Bulletin - Volume 46, Issue 12, December 2011, Pages 2304–2307