Synthesis, structure, magnetic and photoelectric properties of   Ln(3)M(0.5)M &apos; Se-7 (Ln = La, Ce, Sm; M = Fe, Mn; M &apos; = Si, Ge) and   La3MnGaSe7

doi:10.1039/c5ra05629b

CORC > 北京大学 > 化学与分子工程学院

	Synthesis, structure, magnetic and photoelectric properties of Ln(3)M(0.5)M ' Se-7 (Ln = La, Ce, Sm; M = Fe, Mn; M ' = Si, Ge) and La3MnGaSe7
	He, Jianqiao ; Wang, Zhe ; Zhang, Xian ; Cheng, Ye ; Gong, Yu ; Lai, Xiaofang ; Zheng, Chong ; Lin, Jianhua ; Huang, Fuqiang
刊名	RSC ADVANCES
	2015
关键词	CRYSTAL-STRUCTURES PHYSICAL-PROPERTIES ND GD PR TB DY ER HO CHALCOGENIDES
DOI	10.1039/c5ra05629b
英文摘要	Six new isostructural compounds, with the formulas La3Fe0.5GeSe7, La3MnGaSe7, Ce3Fe0.5SiSe7, Ce3Mn0.5SiSe7, Sm3Fe0.5SiSe7 and Sm3Mn0.5GeSe7, have been successfully synthesized via a molten salt method. Their structures are determined by single crystal X-ray diffraction and they crystallize in the Ce6Al3.33S14 structure type (space group: P6(3), Pearson symbol: hP24). Pure phases of the Ce3Fe0.5SiSe7, Ce3Mn0.5SiSe7, Sm3Fe0.5SiSe7 and Sm3Mn0.5GeSe7 compounds were obtained by solid state reaction and were characterized by powder X-ray diffraction (PXRD), scanning electron microscope (SEM), ultraviolet-visible-infrared (UV-vis-IR) absorbance spectroscopy, and magnetization measurements. The Ce3Fe0.5SiSe7 and Ce3Mn0.5SiSe7 compounds show paramagnetic domination accompanied by antiferromagnetic contributions, while the Sm3Mn0.5GeSe7 and Sm3Fe0.5SiSe7 compounds show antiferromagnetic phase transitions with Neel temperatures of 13 K and 24 K, respectively. Optical measurements reveal that all of the four compounds can absorb most of visible light. These four compounds also show photoelectric properties with the photocurrent densities of 81, 1.3, 1.8 and 0.8 mu A cm(-2), respectively.; "Strategic Priority Research Program (B)" of the Chinese Academy of Sciences [XDB04040200]; Innovation Program of the CAS [KJCX2-EW-W11]; NSF of China [91122034, 51125006, 51202279, 61376056]; Science and Technology Commission of Shanghai [13JC1405700, 14520722000]; SCI(E); EI; ARTICLE; czheng@niu.edu; huangfq@mail.sic.ac.cn; 65; 52629-52635; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/421193]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	He, Jianqiao,Wang, Zhe,Zhang, Xian,et al. Synthesis, structure, magnetic and photoelectric properties of Ln(3)M(0.5)M ' Se-7 (Ln = La, Ce, Sm; M = Fe, Mn; M ' = Si, Ge) and La3MnGaSe7[J]. RSC ADVANCES,2015.
APA	He, Jianqiao.,Wang, Zhe.,Zhang, Xian.,Cheng, Ye.,Gong, Yu.,...&Huang, Fuqiang.(2015).Synthesis, structure, magnetic and photoelectric properties of Ln(3)M(0.5)M ' Se-7 (Ln = La, Ce, Sm; M = Fe, Mn; M ' = Si, Ge) and La3MnGaSe7.RSC ADVANCES.
MLA	He, Jianqiao,et al."Synthesis, structure, magnetic and photoelectric properties of Ln(3)M(0.5)M ' Se-7 (Ln = La, Ce, Sm; M = Fe, Mn; M ' = Si, Ge) and La3MnGaSe7".RSC ADVANCES (2015).