NDLI: Effect of Argon/Oxygen Flow Rate Ratios on DC Magnetron Sputtered Nano Crystalline Zirconium Titanate Thin Films

Content Provider	Springer Nature Link
Author	Rani, D. Jhansi Kumar, A. GuruSampath Sarmash, T. Sofi Chandra Babu Naidu, K. Maddaiah, M. Rao, T. Subba
Copyright Year	2016
Abstract	High transmitting, non absorbent, nano crystalline zirconium titanate (ZT) thin films suitable for anti reflection coatings (ARC) were deposited on to glass substrates by direct current (DC) magnetron reactive sputtering technique, under distinct Argon to Oxygen (Ar/O$_{2}$) gas flow rate ratios of 31/1, 30/2, 29/3 and 28/4, with a net gas flow (Ar + O$_{2}$) of 32sccm, at an optimum substrate temperature of 250°C. The influence of the gas mixture ratio on the film properties has been investigated by employing x-ray diffraction (XRD), ultra violet visible (UV–vis) spectroscopy, atomic force microscopy (AFM), energy dispersive x-ray analysis (EDX) and four point probe methods. The films showed a predominant peak at 30.85° with (111) orientation. The crystallite size reduced from 22.94 nm to 13.5 nm and the surface roughness increased from 11.53 nm to 50.58 nm with increase in oxygen content respectively. The films deposited at 31/1 and 30/2 showed almost similar chemical composition. Increased oxygen content results an increase in electrical resistivity from 3.59 × 10$^{3}$ to 2.1 × 10$^{6}$ Ωm. The film deposited at Ar/O$_{2}$ of 28/4 exhibited higher average optical transmittance of 91%, but its refractive index is higher than that of what is required for ARC. The films deposited at 31/1 and 30/2 of Ar/O$_{2}$ possess higher transmittance (low absorbance) apart from suitable refractive index. Thus, these films are preferable candidates for ARC.
Starting Page	1647
Ending Page	1652
Page Count	6
File Format	PDF
ISSN	10474838
Journal	JOM
Volume Number	68
Issue Number	6
e-ISSN	15431851
Language	English
Publisher	Springer US
Publisher Date	2016-04-18
Publisher Institution	The Minerals, Metals & Materials Society (TMS)
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Chemistry/Food Science Physics Environment Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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