中文摘要：

用化学气相沉积法（CVD）制备了Fe0．05Sn0．95O2纳米线，用x射线衍射（XRD）、扫描电镜（SEM）、振动样品磁强计（VSM）和光致发光（PL）等技术研究了样品的微结构和磁性．由XRD测试结果知Fe0．05Sn0．95O2纳米线为四方金红石结构，并且没有观察到Fe和Fe的氧化物的衍射峰．电性测量获得单根纳米线的电阻率为0．029Ω0．cm，载流子浓度为7．6×10^17／cm^3．VSM的测量结果表明Fe0．05Sn0．95O2纳米线具有室温铁磁性，光致发光测得其发光峰分别位于54311m和611nm；样品在真空中退火后，位于543nm的发光峰发光强度增强，磁性也增强．

英文摘要：

Fe0.05Sn0.95O2 nanowires were fabricated using a catalyst assisted chemical vapor deposition （CVD）. The microstructure and magnetic properties of Fe0.05Sn0.95O2 nanowires were measured by X-ray diffraction （XRD）, scanning electron microscope （SEM）, vibrating sample magnetometer （VSM） and photoluminescence （PL）. XRD analysis indicated that Fe0.05Sn0.95O2 nanowires were of rutile structure and no diffraction peaks of Fe clusters and oxides had been found. The specific resistance of an individual Fe0.05Sn0.95O2 nanowire is 0.029 Ω. cm and the carrier concentration is 7.6×10^17/cm^3, respectively. VSM results revealed that Fe0.05Sn0.95O2 nanowires were ferromagnetic with the saturation magnetization and coercivity reaching 0.72uB/Fe and 6 260 A/m, respectively. Two luminescence peaks were observed at 543 and 611 nm. The ferromagnetism of nanowires increased after annealing in vacuum. The origin of the room temperature ferromagnetism can be understood with the bound magnetic polaron（BMP） model.