S. S. Danewalia

11 Questions 45 Answers 0 Followers

Questions related from S. S. Danewalia

Why does (sometimes) a loop appear in the low frequency region of impedance plot of glass-ceramics?

Glass-ceramic pellet was coated both sides with Platinum and impedance measurement were taken. Plot shown in attached figure represents data taken at 600 °C. In some of the other samples also, a...

30 January 2019 5,318 19 View

How is the coercivity and saturation magnetization of a material linked with its microwave absorption properties?

Usually ferrite based materials have potential to absorb microwaves. Impedance matching, which depends on permeability and permittivity of the material, is very important in such cases. Do Hc and...

26 March 2018 3,822 5 View

Where and how can I get latest data on metallic implant failure in past year?

Metallic implants fail in physiological environments due to many reasons over time. I need year wise (last 5 years) data on production and failures of the metallic implants for some research...

09 December 2017 7,629 3 View

Would an iron body get more fastly attracted towards earth during free fall than non-magnetic bodies?

Earth is also magnetic. So, whether that magnetic attraction affects the free fall of magnetic and non-magnetic bodies of same mass.

01 November 2017 3,475 11 View

What are the major sources of carbon peaks in XPS spectra of non-carbonous samples?

Our glasses do not contain any carbon in composition (SiO2-B2O3-CaO-MnF2). However, the XPS spectra shows the carbon peak (1s) at ~ 285 ev (Binding energy). Measurements were performed on...

15 December 2016 3,435 20 View

Why the Raman peaks in glasses show decrease in intensity or cease to zero with increase in modifier cations?

Glass ceramics generally have well defined Raman peaks in Raman spectrum. However with the increase in modifier content, I observed that intensity of the peaks decreased and ceased to even zero...

04 May 2015 7,674 7 View

What is the reason for continuously increasing intensity of Raman spectra of glasses?

We synthesized glasses via melt and quench technique. We observed that high wavenumber (particularly >1000 cm^-1) region of the spectra consist of regularly increasing intensity curve with no...

04 May 2015 6,809 7 View

Which SBF is most appropriate to check in-vitro bioactivity of glass-ceramics?

Glass-ceramics are generally less bioactive than their glass counterparts. A range of SBF solutions is available to check in-vitro bioactivity such as SBF,c-SBF, r-SBF, Tas-SBF, TRIS etc. Which...

14 April 2015 954 6 View

What are the possible reasons for negative and stray data points obtained from Impedance Analyzer?

We have Solartron SI 1260 FRA Impedance analyzer with Eurotherm furnace. It gives good quality cole-cole curves when the probostat is placed out side the furnace chamber. But as soon as we place...

17 February 2015 1,707 5 View

How to calculate optical basicity of oxides?

Seeking to calculate optical basicity of some oxides like Manganese oxides, Iron oxides etc. But in the literature I came across many formulas for the same. Which one to choose and why?

27 July 2013 7,129 6 View

How can optical band gap energy be corelated with bioactivity of the material?

Optical band gap energies of some glasses have been calculate using Tauc' plots from UV-vis data. Can some predictions be made about the bioactivity of the material?

27 July 2013 5,282 0 View