掺杂剂
反铁磁性
材料科学
分析化学(期刊)
兴奋剂
铁磁性
磁化
核磁共振
物理
凝聚态物理
化学
有机化学
光电子学
磁场
量子力学
作者
Aseya Akbar,Saira Riaz,Robina Ashraf,Shahzad Naseem
标识
DOI:10.1109/tmag.2014.2311826
摘要
Amongst the various phases of iron oxide, hematite (Fe 2 O 3 ) is the most stable form, which shows antiferromagnetic behavior with ferromagnetic canting at room temperature. Doping of different metal ions in α-Fe 2 O 3 will not only lead to its new technological and industrial applications but also enhance its performance in existing applications. In this paper, we report synthesis and characterization of cobalt (Co)-doped Fe 2 O 3 thin films with dopant concentration in the range of 0%-10%. XRD peaks shift to slightly higher angles as compared with undoped thin films due to smaller ionic radii of cobalt (72 pm) as compared with iron (74 pm). Room temperature magnetic properties, studied using vibrating sample magnetometer, show increase in saturation magnetization with increase in dopant concentration up to 8%. Further increase in dopant concentration to 10% degrades magnetic properties, which might be because of the presence of more atoms at the grain boundaries.
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