Synthesis, and magnetic and optical properties of nanocrystalline alkaline-earth hexaborides

IMR OpenIR

	Synthesis, and magnetic and optical properties of nanocrystalline alkaline-earth hexaborides
	Bao, Lihong; Qi, Xiaoping; Tana; Chao, Luomeng; Tegus, O.; baolihong@imnu.edu.cn
	2016
发表期刊	CRYSTENGCOMM
ISSN	1466-8033
卷号	18 期号:7 页码:1223-1229
摘要	Cubic-shaped ultrafine alkaline-earth hexaborides (MB6, M = Ca, Ba, Sr) have been synthesized via a solid-state reaction of MO with NaBH4 at 1150 degrees C. Phase composition, grain morphology, microstructure, magnetic and optical absorption properties were investigated using XRD, FESEM, HRTEM, a SQUID magnetometer and optical measurements. Results show that all of the synthesized hexaborides are composed of a CsCl-type single phase and the average grain sizes of nanocrystalline CaB6, SrB6 and BaB6 are 150 nm, 20 nm and 30 nm at a reaction temperature of 1150 degrees C. The magnetic measurement results show that all of the synthesized samples show a weak ferromagnetic behavior at room temperature. This is the first time that we have found ferromagnetic properties in nanocrystalline alkaline-earth hexaborides. Moreover, the HRTEM results strongly supported that the magnetic moment of the alkaline-earth hexaborides originated from the intrinsic defects of the nanocrystals. The optical absorption results show strong light absorption in the visible light region and transparency for near infrared rays for nanocrystalline alkaline-earth hexaborides. This interesting optical property should have important effects for extending optical applications, such as in near infrared filtering or detectors.
部门归属	[bao, lihong ; qi, xiaoping ; tana ; tegus, o.] inner mongolia normal univ, inner mongolia key lab phys & chem funct mat, hohhot 010022, peoples r china ; [chao, luomeng] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
资助者	Fundamental Research Open Project of Inner Mongolia [20130902]; National Natural Science Foundation of China [51302129]; Program for Young Talents of Science and Technology in Universities of Inner Mongolia [NJYT-14-B03]; High Level Talents Scientific Foundation of Inner Mongolia Normal University [2013YJRC017]
收录类别	sci
语种	英语
WOS记录号	WOS:000369670800018
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75169
专题	中国科学院金属研究所
通讯作者	baolihong@imnu.edu.cn
推荐引用方式 GB/T 7714	Bao, Lihong,Qi, Xiaoping,Tana,et al. Synthesis, and magnetic and optical properties of nanocrystalline alkaline-earth hexaborides[J]. CRYSTENGCOMM,2016,18(7):1223-1229.
APA	Bao, Lihong,Qi, Xiaoping,Tana,Chao, Luomeng,Tegus, O.,&baolihong@imnu.edu.cn.(2016).Synthesis, and magnetic and optical properties of nanocrystalline alkaline-earth hexaborides.CRYSTENGCOMM,18(7),1223-1229.
MLA	Bao, Lihong,et al."Synthesis, and magnetic and optical properties of nanocrystalline alkaline-earth hexaborides".CRYSTENGCOMM 18.7(2016):1223-1229.