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Structural and Magnetic Properties of Chemically Synthesized Pd-Modified NiFe2O4 Nanoparticles
Shahid Atiq,Shahid M. Ramay,Asif Mahmood,Saira Riaz,Shahzad Naseem
Author NameAffiliationE-mail
Shahid Atiq Centre of Excellence in Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore-54590, Pakistan shahidatiqpasrur@yahoo.com 
Shahid M. Ramay Physics and Astronomy Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia  
Asif Mahmood Chemical Engineering Department, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia  
Saira Riaz Centre of Excellence in Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore-54590, Pakistan  
Shahzad Naseem Centre of Excellence in Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore-54590, Pakistan  
Abstract:
Magnetic nanoparticles of NiFe2O4-Pd composites have been synthesized using a simple, low cost, sol-gel auto-combustion method. As-prepared samples were sintered at 800 ℃ for 6 h in order to develop the crystalline phase. X-ray diffraction confirmed the spinel structure of the ferrite samples. Structural morphology and size of the nanoparticles were evaluated using a field emission scanning electron microscope. Magnetic hysteresis loops were obtained at 300 and 100 K using a physical properties measurement system. The value of saturation magnetization was observed to decrease at the temperatures with the increase of Pd contents up to 5% but then a sudden rise in saturation magnetization was observed for the addition of 10% Pd in NiFe2O4.
Key words:  Magnetic nanoparticles  Sol-gel auto-combustion  Low temperature magnetic property
FundProject:
化学合成的钯改性的NiFe2O4纳米颗粒的结构和磁性
ShahidAtiq,ShahidM.Ramay,AsifMahmood,SairaRiaz,ShahzadNaseem
摘要:
采用溶胶-凝胶自动燃烧方法合成了镍铁-钯复合材料NiFe2O4-Pd的磁性纳米颗粒. 样品在800 ℃烧结6 h生成结晶相. X射线衍射证实样品呈尖晶石结构. 利用场发射扫描电子显微镜研究结构形态和纳米颗粒的大小. 饱和磁化强度在100和300 K时,随着钯含量增加达5%降低,但加入10%Pd时磁化强度突然上升.
关键词:  磁性纳米粒子  溶胶-凝胶自动燃烧  低温磁性质
DOI:10.1063/1674-0068/29/cjcp1507158
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