Recent content by y4ku24

Yup, very much! thanks again.

Dear Mapes, Thank you for your feedback. However, I am reading a paper stating that a Fe90Zr10 alloy has an atomic concentration of Fe: 8.5x10^28 m^-3 and Zr: 4.29x10^28 m^-3 If it is a ratio, why is there a unit, and how did they come up with the estimated values above?

Hello everyone. Just a quick question: Could somebody explain to me what atomic concentration is, and whether there is a list of all the atomic concentration of the elements somewhere in the internet. The 1st time I heard the term, I typed it on wikipedia and google, surprisingly the...

TO hiyok: My material is an amorphous metal, with composition of Zr55Ni5Al10Cu30. It is known as metallic glass, and has some advantages compared to common metals such as high strength and high corrosion resistance, provided that it stays as an amorphous metal. The materials looks like a common...

To transcience: Hm,seems like a considerable explanation. Will look up about it. Thank you.

Hello everyone. This question may sound naive, but since I am relatively new to the subject, I would like to ask for some clarification related to phonon and electrical resistivity. As most of you might be aware of, electrical resistivity of crystalline metals increases due to increase in...

Thank you Buckethead for the lead.

To SSK12345: I have the same assumption as what you have said, which is at normal temperature it is a semiconductor, and at high temperature it turns into a conductor. But other than the resistivity result, I am yet to find any other evidence to prove that this assumption is plausible. Thanks...

Hello everyone, I have a (simple?) question: How do you differentiate a material to be a conductor or a semiconductor? It is just only by examining the material's electrical resistivity/conductivity whether it is low or high? Because I have heard that even some metallic conductors have high...

To sokrates and heylouis: Thank you for the response. Thank you also for the advice to post this message in solid state physics. I will try to do that! As for the temperature dependence measurement, yes, I have done that measurement, and yes, metallic glass's resistivity decreases as...

Dear fatra2, Thanks for the info. I understand your point, but unfortunately, I do know the explanation for the macroscopic and microscopic point of view. What I actually wanted to know is, if you don't already know whether a material is a semiconductor or not, then how do you go about figuring...

Hello everyone, I have a (simple?) question: How do you differentiate a material to be a conductor or a semiconductor? It is just only by examining the material's electrical resistivity/conductivity whether it is low or high? Because I have heard that even some metallic conductors have high...

Thank you very much for all your wonderful insights! I am just a new member, but all of you have been much of help! To Mapes: I have found the book and the specific chapter. Sadly, when it comes to explaining the strange phenomenon, it only says "There have been a number of theories attempting...

No I haven't. Thanks for the info! The title of the book(?) is such kind of titles that I am really looking for! :D I will try to look for it at my library, but I don't know if they have it. Is there a site to read that or something?

Thank you for your concern. Metallic glass is basically made of metal elements, but the structure in the micro level is amorphous, i.e. glassy. Thus the name metallic glass. How it is made is by rapidly cooling a melt so that the structure remains amorphous, even though it will return to its...