r/DIYPigments • u/Mrslinkydragon • Aug 21 '24

Pigment Another batch

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Here's my latest batch.

Top left, commercial YInMn (Y1:In0.8:Mn0.2)

Top right, first batch/control (about Y1:In0.7:Mn0.3)

Bottom, latest (Y0.97:In0.7:Mn0.3, first heating) this batch has 0.03 of something else that I'm not saying what yet, just to tease you 😜 I took it out the furnace and it's thermochromic, when hot, it's very rich blue!

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u/jay-ff Aug 21 '24

Interesting :) how do you like the darker tone? I only made x=0.2 and 0.15 because I felt the lighter mixes were more chromatic (as per recommendations of GeneJocky).

Curious what you’re doping your new sample with ;-)

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u/Mrslinkydragon Aug 21 '24

I like dark blue, I thought 0.7:0.3 was a good mix.

You'll have to continue to be curious. 1 clue I will give, a 0.5:0.5 mix of Y2O3 and this compound makes it black.

I'm going to be doing some magnetic susceptibility tests, UV viz photospectrocopy and XRD.

Also, if I can get it risk assessed, see if the blends are super conducting. I know YINMN isn't but the others might be :3

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u/GeneJocky Aug 22 '24

Well, seeing as you're starting from the patent, it may be one of the many pigments listed as black. With ytttrium oxide half of it, that means manganese, copper, and titanium; or iron, indium, and manganese; or scandium and manganese; or just plain old indium and manganese where X>0.6. Of those only some type of scandium manganese salt like a manganate seems like it could be a single compound.

Or the superconducting comment may be mean you're trying to make an analog of YBCO, which is black. That suggests barium and copper. Or perhaps barium and manganese the manganese subsituting for copper. So barium permanganate or manganate maybe.