The effect of Mn doping on structural, magnetic and optical properties of TiO2 nanoparticles

نویسندگان

  • Alireza Razeghizadeh Department Physics, Faculty of science, Payamenoor University, IRAN
  • Elham Elahi Department Physics, Faculty of science, Payamenoor University, Iran
  • Vahdat Rafee department of physics, faculty of science, payamenoor university, tehran, iran
چکیده مقاله:

The aim of this paper is to study the effect of Mn concentration on the structural, magneticand optical properties of TiO2 nanoparticles. TiO2 nanopowders with Mn concentration of 0%,0.2%, 1% and 5% were synthesized by the sol-gel method. The structural, surface morphologyand average crystal grain size, optical, magnetic properties and chemical compounds of thesamples are studied using XRD, FE-SEM, Uv-Vis, VSM and EDX analysis respectively. The resultsindicate that the samples are crystallized at anatase phase. Also, the average size of thenanoparticles is decreased by increasing Mn doping percent. The study of the optical propertiesshows that the absorption maximum dislocates toward higher wavelengths by adding Mnto the sample. This shift may be ascribed to the enhanced trapped electron absorption causedby the Mn-doped ions. The optical energy band gap of the doping samples shows significantreduction rather the pure state. The samples show significant paramagnetic behavior whenthe Mn concentration is 5%.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

THE EFFECT OF DY- DOPING ON THE STRUCTURAL AND MAGNETIC PROPERTIES OF MN-ZN FERRITE NANOPARTICLES

Mn0.8Zn0.2Fe2-xDyxO4 (where x= 0, 0.025, 0.05, 0.075, 0.1) ferrite nanoparticles were synthesized by auto- combustion sol-gel method for the first time in this study. The effect of Dy-doping on the structural and magnetic properties of the produced specimens was examined using the X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometery (VSM), and ...

متن کامل

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

15 صفحه اول

The Influence of Ag Doping on Structural, Optical Properties and Photocatalytic Activity of TiO2/SiO2 Nanocomposite

In the present study, TiO 2 /SiO 2 and TiO 2 /SiO 2 /Ag nanocomposite powders were synthesized by sol-gel technique. Moreover, for investigation of the Ag doping effect different concentrations of dopant were added. Structures were characterized by IR spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive Analytical X-Ray (EDAX), and X-Ray Diffraction (XRD) methods. Fur...

متن کامل

The Effect of Europium Doping on the Structural and Magnetic Properties of GdMnO3 Multiferroic Ceramics

Single phase Eu doped GdMnO3 ceramics were prepared using solid state reaction route. Several different characterization techniques were used to investigate the structural and magnetic properties of the samples, including X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX) and Vibrating Sample Magnetometer (VSM). All samples indicated single p...

متن کامل

Effect of Annealing Temperature on the Structural, Magnetic and Optical Properties of SrCo2Fe16O27 Hexaferrite Nanostructure

In this paper, W-type SrCo2Fe16O27 hexaferrite nanostructures were synthesized by sol-gel auto-combustion method. Effect of annealing temperature on the structural, magnetic and optical properties of these SrCo2Fe16O27 nanostructures was investigated. In order to determine the annealing temperature of samples, the prepared gel was examined by thermo-gravimetric and differential-thermal analyses...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 5  شماره 2

صفحات  77- 83

تاریخ انتشار 2018-06-01

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023