Cover Page November-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 11, Pages 819-824, November 2019
About Cover

Electric vehicles have seen steady development and growth over the last half-decade. The integration of modern technologies like Artificial Intelligence and Machine Learning leading the advancements in the lives and durability of batteries and their efficiency. With each passing year, electric mobility is seeing new heights. And more than 2 million electric vehicles started running on the road which is a record for a calendar year. If the current trends continue, the number of electric vehicles that would be sold in the year 2030 could be as high as 43 million. The cover photo of this November 2019 issue is inspired by the editorial article written by Dr. Ashutosh Tiwari on Current Global Scenario of Electric Vehicles.


Structural, Optical and Magnetic Properties of Pristine, (Mn, Al) co-doped ZnO Nanocrystallites Synthesized via co-Precipitation Method

P. Swapna1, S. Venkatramana Reddy1,*, B. Sreenivasulu2

Adv. Mater. Lett., 2019, 10 (11), pp 819-824

DOI: 10.5185/amlett.2019.0018

Publication Date (Web): Oct 04, 2019

1Department of Physics, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
2Annamacharya Institute of Technology & Sciences, Rajampet 516126, Andhra Pradesh, India

Abstract

Undoped and (Mn, Al) co-doped Zinc Oxide nanoparticles are synthesized by chemical co-precipitation method at room temperature effectively via poly ethylene glycol (PEG) as stabilizing agent. XRD data reveals that all the concentrations acquire hexagonal wurtzite crystal structure with no secondary peaks concerning to Al or Mn, indicating successful dissolution of Al and Mn in to ZnO host lattice. The exact particle size is estimated using TEM illustrations, which is confirmed through the XRD results. EDS spectrum shows, no impurities are present in the samples other than manganese and aluminum. The absorption spectra of all the samples reveal characteristic absorption edge in the vicinity of 375 nm.  PL spectra show that all the concentrations include defect associated peaks in the visible region. VSM measurements reveal the ferromagnetic nature for co-doped samples. © VBRI Press.

Keywords

Magnetic studies, defect peaks, Secondary phase, absorption edge and VSM.

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