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Q: 2.42 index of refraction ( Answered,   1 Comment )
Subject: 2.42 index of refraction
Category: Science > Chemistry
Asked by: eden1891-ga
List Price: $50.00
Posted: 09 Mar 2006 04:32 PST
Expires: 08 Apr 2006 05:32 PDT
Question ID: 705290
i'm looking to get any information on materials with a 2.42 index of refraction
(like a diamond)i'll settle for a range between 2.3-2.5 as well

Request for Question Clarification by welte-ga on 19 Mar 2006 10:09 PST
Hi eden1891-ga, Are you simply looking for a list of materials with an
index of refraction in this range (2.3-2.5)?  Any other requirements? 
Any other information about these materials that you require?
Subject: Re: 2.42 index of refraction
Answered By: pafalafa-ga on 04 Apr 2006 20:14 PDT

There are numerous substances that meet your refraction criteria. 
I've listed them below, as gleaned from several online lists:

Wulfenite 2.3 

Chrome Yellow 2.31 

Crocoite 2.31 

Sphalerite 2.368 

Chrome Green 2.4 

Fabulite 2.409 

Strontium Titanate 2.41 

Diamond 2.417 

Chrome Red 2.42 

Anatase 2.49

Sphalerite 2.369

Arsenic trisulphide   2.4777

Barium fluoride   2.3816

Strontium titanate  2.4254

Zinc selenide  2.485

eglestonite  2.49 

franklinite  2.36 

perovskite 2.38 

sphalerite  2.428 

I checked a number of other lists as well, but the materials quickly
began repeating.

I trust this list fully meets your needs.

However, if you find you'd like any additional information, don't
hesitate to ask.  Just post a Request for Clarification, and I'm at
your service.


search strategy -- Google search on:  [ "index of refraction"  OR
"refractive index" 2.3..2.5 ]
Subject: Re: 2.42 index of refraction
From: kottekoe-ga on 09 Mar 2006 22:10 PST
Diamond has a remarkably high index, 2.42. Zinc Iron Sulphide
(Sphalerite) puts up good competition at 2.37. The common substitute
for diamond is Yittrium stablized Zirconia (YSZ), which has a cubic
crystal structure (Cubic Zirconia). CZ typically has an index around
2.17. Another high index material is Moissanite, a form of Silicon
Carbide with an index higher than diamond, around 2.67.

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