Effect of particle size and lattice strain on Debye�?�Waller factors of Fe3C nanoparticles

Bulletin of materials science

N Gopi Krishna¹  E Purushotham² 

[1] Department of Physics, SR Engineering College (Autonomous), Warangal 506 371, India$$Department of Physics, Kakatiya University, Warangal 506 009, India$$Department of Physics, SR Engineering College (Autonomous), Warangal 506 371, IndiaDepartment of Physics, SR Engineering College (Autonomous), Warangal 506 371, India$$Department of Physics, Kakatiya University, Warangal 506 009, India$$Department of Physics, Kakatiya University, Warangal 506 009, IndiaDepartment of Physics, SR Engineering College (Autonomous), Warangal 506 371, India$$Department of Physics, Kakatiya University, Warangal 506 009, India$$;Department of Physics, SR Engineering College (Autonomous), Warangal 506 371, India$$Department of Physics, SR Engineering College (Autonomous), Warangal 506 371, IndiaDepartment of Physics, SR Engineering College (Autonomous), Warangal 506 371, India$$

关键词: Nanocrystalline Fe3C ball milling;    XRD;    SEM;    lattice parameters;    particle size;    lattice strain;    Debyeâ€�?�Waller factor;    vacancy formation energy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Fe₃C nanoparticle powders have been prepared by a high energized ball mill. The resulting nano-particle powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) measurements. The high-energy ball milling of Fe₃C after 10 h resulted in crystalline size of about 5 nm. The Debye temperature, mean-square amplitudes of vibration, Debyeâ€�?�Waller factor, lattice parameters, particle size, lattice strain and vacancy formation of energies of Fe₃C nanoparticles prepared by ball mill have been obtained from X-ray integrated intensities. The integrated intensities have been measured with a Philips CWU 3710 X-ray powder diffractometer fitted with a scintillation counter using filtered CuKð›�? radiation at room temperature and have been corrected for thermal diffuse scattering. The X-ray Debye temperatures obtained in the present investigation has been used to estimate the vacancy formation energies for Fe₃C nanoparticles.

【 授权许可】

Unknown