Preparation of Boron Nitride Nanoparticles with Oxygen Doping and a Study of Their Room-Temperature Ferromagnetism
Preparation of Boron Nitride Nanoparticles with Oxygen Doping and a Study of Their Room-Temperature Ferromagnetism
复制标题
氧掺杂氮化硼纳米粒子的制备及其室温铁磁性研究
DOI：
10.1021/acsami.7b17932
复制
发表时间：
2018-04-18
影响因子：
9.5
通讯作者：
Zhang, Mingzhe
中科院分区：
文献类型：
--
作者：
Lu, Qing;Zhao, Qi;Zhang, Mingzhe
在这项工作中，通过一种新的、简便且有效的方法合成了具有室温铁磁性的氧掺杂氮化硼纳米颗粒。 X射线光电子能谱分析纳米颗粒中不含金属磁性杂质。随着反应时间的增加，氮化硼纳米粒子呈现出抛物线形状。当反应时间为12 h时，饱和磁化强度值在300 K时达到最大值0.2975 emu g(-1)，表明居里温度(T-C)高于300 K。结合第一性原理计算，导带中B 2p 轨道、N 2p 轨道和O 2p 轨道之间的耦合是室温铁磁性的主要起源，也证明了磁矩随氧掺杂含量的变化而变化。与其他室温铁磁半导体相比，氮化硼纳米颗粒由于具有高温抗氧化性和优异的化学稳定性，在自旋电子器件中具有广泛的潜在应用。
In this work, oxygen-doped boron nitride nanopartides with room temperature ferromagnetism have been synthesized by a new, facile, and efficient method. There are no metal magnetic impurities in the nanopartides analyzed by X-ray photoelectron spectroscopy. The boron nitride nanopartides exhibit a parabolic shape with increase in the reaction time. The saturation magnetization value reaches a maximum of 0.2975 emu g(-1) at 300 K when the reaction time is 12 h, indicating that the Curie temperature (T-C) is higher than 300 K. Combined with first-principles calculation, the coupling between B 2p orbital, N 2p orbital, and O 2p orbital in the conduction bands is the main origin of room-temperature ferromagnetism and also proves that the magnetic moment changes according the oxygen-doping content change. Compared with other room temperature ferromagnetic semiconductors, boron nitride nanopartides have widely potential applications in spintronic devices because of high temperature oxidation resistance and excellent chemical stability.