Structural and magnetic Properties of Mn, Co, Ni doped ZnO Nanocrystals
Journal Title: STAR Journal - Year 2015, Vol 4, Issue 1
Abstract
ZnO is one of the most important semiconductor material for research. It is abundant, cost effective, non-toxic and also it is used in many bio-medical applications. The transition metal(TM) such as manganese (Mn), cobalt (Co) and nickel (Ni) doped zinc oxide (ZnO) nanocrystals are promising candidates for variety of practical application due to their spin of electron that lead to new magnetic, optical and transport properties. TM doped ZnO nanocrystals were synthesized using co-precipitation technique. The structural and magnetic properties were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) and vibrating sample magnetometer (VSM) measurements. The XRD of Mn-doped ZnO nanocrystals shows hexagonal structure. The crystal size from the XRD was observed to be 10 nm. FTIR spectra shows strong absorption peaks between 200 - 600 cm-1 as a characteristic bands due to the metal ions. The TM doped ZnO nanocrystals shows weak ferromagnetic properties at room temperature. It is well known that, ZnO has large band gap energy about 3.3ev which only absorb light within UV region. TM doped ZnO nanocrystals have very good photo catalytic activities, therefore in our further research work, we plan to investigate different optical properties of these materials .
Authors and Affiliations
Tamirat Tibebu| Department of Physics, College of Natural and Computational Sciences, Wollega University, Post Box No: 395, Nekemte, Ethiopia, Raghavender A. T| Department of Physics, College of Natural and Computational Sciences,Wollega University, Post Box No: 395, Nekemte, Ethiopia , Kebede Legesse Kabeta| Department of Physics, College of Natural and Computational Sciences, Wollega University, Post Box No: 395, Nekemte, Ethiopia, Anjaneyulu T| Department of Physics, Narasaraopet Engineering College, Narasaraopet - 522 601, Andhra Pradesh, India, Melkamu Biyane Regasa| Department of Chemistry, College of Natural and Computational Sciences, Wollega University, Post Box No: 395, Nekemte, Ethiopia
Keywords
Related Articles
- EP ID EP9751
- DOI http://dx.doi.org/10.4314/star.v4i1.14
- Views 375
- Downloads 13
Teachers’ Emotional Intelligence and Sense of Self-efficacy Beliefs: A study on Second Cycle Public Primary School EFL Teachers in Bahir Dar Town, Ethiopia
The purpose of this study was to examine second cycle public primary school English as Foreign Language (EFL) teachers‟ level of emotional intelligence (EI) and self-efficacy beliefs and the relationship between the...
Characterization and Phase Transitions of Bi Doped BaTiO3 Ceramics Prepared through Chemical Route
Nano particulate Barium Bismuth Titanate (BaBixTi1-xO3-δ) materials (with x=0.05, 0.1 and 0.15) were prepared through sol-gel chemical route (Pichini method) and the XRD patterns were indexed on the basis of tetragona...
Determinants of Wheat Yield Variation of Smallholders in South Eastern Ethiopia: Application of Ordered Logistic Regression
No Abstract
Investigating the Scaling Properties of Extreme Rainfall Depth Series in Oromia Regional State, Ethiopia
Depth Duration Frequency (DDF) relationships are currently constructed based on at site frequency analysis of rainfall data separately for different durations. These relationships are not accurate and reliable since th...
Perinatal Complications of Twin Deliveries at Jimma University Specialized Hospital, Southwest Ethiopia: A Facility-based Cohort Study
Twin pregnancy carries higher foetal and neonatal complications. This situation is worse in Sub-Saharan Africa due to lack of well-equipped facilities. Studies on twin pregnancy and its perinatal complications are limite...