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Topic: Yttrium Iron Garnet Synthesis from their Respective Oxides  (Read 8985 times)

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Offline Mitch

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Yttrium Iron Garnet Synthesis from their Respective Oxides
« on: March 28, 2008, 07:41:16 PM »
I have to propose a solid state reaction to make Y3Fe5O12

I have suggested: Y2O3 + Fe2O3 -> Y3Fe5O12

I think that is impossible to balance, so would this be a probable chemical reaction equation:
3Y2O3 + 5Fe2O3 -> 2Y3Fe5O12 + 12O2

Actually, how is it commonly synthesized? I can only find modern sol-gel papers like this one: Influence of Complexing Agents and pH on Yttrium-Iron Carnet Synthesized by the Sol-Gel method
« Last Edit: March 28, 2008, 11:08:52 PM by Mitch »
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Offline Arkcon

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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #1 on: March 28, 2008, 07:48:58 PM »
Incredible synthesis procedure you've found Mitch, I would have assumed garnet, whether gem-quality or YAG laser material, was made in a furnace out of a slow mix of Aluminum and other oxides.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Mitch

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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #2 on: March 28, 2008, 11:11:50 PM »
I believe the most effective synthesis for large YAG crystals is still the normal solid state reactions. But, sol-gel methodologies have been all the rage for the past 10-15 years for all things small and crystalline.
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Offline Arkcon

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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #3 on: March 28, 2008, 11:20:32 PM »
I always enjoyed reading Crystal Growth in Gel Media by Heinz K. Henisch, that was a great book.  I remember when I had the boss order for me a U-tube.  I showed him the book and what I wanted to do -- I so wanted to grow calcite crystals in an agar gel (never did get that to work).  He said if I could reliably produce 1 mm clear calcite crystals, I'd have a moneymaking machine.  I only wish I could read or download the reference you cited.  :'(
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Offline Mitch

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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #4 on: March 29, 2008, 12:14:07 AM »
I've added you to the Chemist membergroup, it places beakers under your name and grants access to the hidden chemists only forum. You'll find a treat there for you.
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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #5 on: March 29, 2008, 03:35:19 AM »
I have suggested: Y2O3 + Fe2O3 -> Y3Fe5O12

I think that is impossible to balance

EBAS rulez ;)

3Y2O3 + 5Fe2O3 -> 2Y3Fe5O12
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Offline Mitch

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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #6 on: March 29, 2008, 03:43:18 AM »
lol, I tried. Logically too; I must of been keeping to much stuff in my head to think it through correctly.
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Offline Mitch

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Re: Yttrium Iron Garnet Synthesis from their Respective Oxides
« Reply #7 on: March 29, 2008, 03:44:25 AM »
Plus, it helps keep this forum active. :)
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