Talk:Barium ferrite

Untitled

I am removing the redirect from barium ferrate, as this is clearly a different compound and gets no mention in this article. --Pyrochem (talk) 07:13, 20 February 2008 (UTC)

Structure

For future reference, here are two papers on the crystal structure of barium ferrite:

• S. Meriani: Polymorphism of barium monoferrite, BaFe₂O₄
• H. Mitsuda, S. Mori and C. Okazaki: The crystal structure of barium monoferrite, BaFe₂O₄

Ben (talk) 01:28, 31 May 2008 (UTC)

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BaFe₂O₄ is not what barium ferrite usually refers to.

Barium ferrite usually refers to barium hexaferrite, formula BaFe₁₂O₁₉ also written as BaO(Fe₂O₃)₆, which is commonly used for its magnetic properties, rather then barium monoferrite, formula BaFe₂O₄, which as far as I can tell, seems primarily to be used as a precursor to barium hexaferrite. I'll be editing the article to reflect this. OrganoMetallurgy (talk) 15:46, 12 August 2017 (UTC)

Preparation

@EdChem: I think it's usually prepared by a high temperature reaction involving BaCO₃/BaO and Fe₂O₃. OrganoMetallurgy (talk) 00:01, 13 August 2017 (UTC)

@OrganoMetallurgy: Like I added in this edit? EdChem (talk) 00:13, 13 August 2017 (UTC)

I think so. OrganoMetallurgy (talk) 00:20, 13 August 2017 (UTC)

Thanks... does the article statement " Thus, BaFe12O19 is related to Fe12O20, with the empirical formula Fe3O4, i.e. magnetite.[6]" make sense to you, OrganoMetallurgy? The empirical formula for Fe12O20 is Fe3O5, so the connection to magnetite is not clear to me. Magnetite is a 1:2 mix of iron(II) and iron(III) yet ferrites are iron(III) only. The ref is an entire text book, so looking up the source is unhelpful. Thoughts? EdChem (talk) 00:31, 13 August 2017 (UTC)

EdChem, it doesn't make sense. I suspect it is the result of a combination of errors involving formulas and confusion between the different types of ferrites (some of which are related to magnetite). Also the term ferrite doesn't exclude mixed valence iron compounds. OrganoMetallurgy (talk) 01:12, 13 August 2017 (UTC)

(edit conflict) OrganoMetallurgy, thanks. I mis-spoke, I was thinking about this ferrite, BaFe12O19 = BaO.6Fe2O3 as iron(III) only. I favour removing the magnetite sentence entirely, what do you think? EdChem (talk) 01:18, 13 August 2017 (UTC)

Do it. OrganoMetallurgy (talk) 01:22, 13 August 2017 (UTC)

Nevermind, I already did it. OrganoMetallurgy (talk) 02:15, 13 August 2017 (UTC)

Thanks,OrganoMetallurgy, I was looking at the article on the 3₁₀ helix.  :) EdChem (talk) 02:48, 13 August 2017 (UTC)

Requested move 13 August 2017

The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review. No further edits should be made to this section.

The result of the move request was: not moved DrStrauss talk 20:54, 23 August 2017 (UTC)

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Barium ferrite → Barium hexaferrite – Barium hexaferrite seems to be the main focus of the article and is less ambiguous. OrganoMetallurgy (talk) 16:31, 13 August 2017 (UTC)

Oppose. BaFe₆O₁₉ is called barium ferrite, regardless of whether some happen to find it an ambiguous or inconvenient name. We just dont go around inventing names, that would be OR, not to mention confusing. If several barium ferrites are known, then we either pack them into this article or rediscuss. --Smokefoot (talk) 17:02, 13 August 2017 (UTC)

Comment Smokefoot, Barium hexaferrite isn't a name I invented, it's a name for BaFe₁₂O₁₉ that is used in literature. OrganoMetallurgy (talk) 17:30, 13 August 2017 (UTC)

Thanks for the explanation. But the hexaferrite term is rarely used. About 1:10 by the Google search test. --Smokefoot (talk) 19:06, 13 August 2017 (UTC)

No So is this article about BaFe₆O₁₉ (too much oxygen in this formula) or BaFe12O19? It seems to be the latter, and I will assume that for adding ids. Possibly barium hexaferrite should be a redirect to here. It's also called "Ferroxdure"[1]. There is a wikidata item with this hexaferrite name.[2] but maybe that should be merged with the barium ferrite data[3] linking this article. Google thinks that "Barium ferrite" is the most common, followed by "barium hexaferrite" followed by "Ferroxdure", with "barium hexaferrate" in last position. Note there is also Barium ferrate which is BaFeO₄ and is clearly different. Graeme Bartlett (talk) 09:16, 17 August 2017 (UTC)

Comment There is also the antiferromagnetic barium monoferrite BaFe₂O₄ that sometimes occasionally is confused with barium hexaferrite. Which I suspect is related to the fact that the formula on this page was incorrectly listed as being BaFe₂O₄ for the last ten years. OrganoMetallurgy (talk) 13:41, 17 August 2017 (UTC)

• Oppose. There's no article on other forms of barium ferrite and no prospect of one, see Category:Barium compounds. This article does have issues in that the existence of other forms should be clearly mentioned, and we should have a link to and from barium ferrate for those without the chemistry to know the significance of the distinction. Andrewa (talk) 18:46, 21 August 2017 (UTC)

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The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page or in a move review. No further edits should be made to this section.