Effect of samarium doping on structural, optical and magnetic properties of vertically aligned ZnO nanorod arrays

作     者：D.Ranjith Kumar K.S.Ranjith L.R.Nivedita R.T.Rajendra Kumar 

作者机构：Department of Nanoscience and Technology Bharathiar University Coimbatore India Advanced Materials and Devices Laboratory (AMDL) Department of Physics Bharathiar University Coimbatore India 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2017年第35卷第10期

页      面：1002-1007页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 07[理学] 08[工学] 070205[理学-凝聚态物理] 070301[理学-无机化学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by Department of Science and Technology Government of India under the Nano mission project(SR/NM/NS-113/2010-BU(G)) DST-FIST and DST-PURSE for the characterization facilities 

主　　题：Sm doped ZnO room temperature ferromagnetism(RTFM) defects rare earths 

摘      要：Samarium doped vertically aligned one dimensional ZnO nanorod（NR） arrays were grown by vapor phase transport（VPT） method through vapor solid（VS） growth process. Influence of different concentrations（0% to 8%） of Sm（all Sm contents in the paper are in mass fraction） on the ZnO NR arrays were investigated by X-ray diffraction（XRD）, field emission scanning electron microscopy（FESEM）, photoluminescence（PL）, Raman spectroscopy and vibrating sample magnetometry（VSM） techniques, respectively. X-ray diffraction studies revealed that the ZnO NR arrays were perfectly oriented along（002） crystallographic orientation with wurtzite crystal structure. Photoluminescence results showed an increase in oxygen vacancies due to increase in Sm doping. M-H curves revealed enhanced ferromagnetic behavior, and the magnetic moment values were 0.45, 0.363, 1.694, 3.613 and 2.197 emu/cm^3 for（0–8%） Sm doped ZnO NR arrays respectively. The curve revealed that paramagnetic behavior was observed for undoped ZnO NR arrays and on increasing the Sm dopant to 4%, paramagnetic switched to ferromagnetic behavior.