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DC Field | Value | Language |
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dc.contributor.author | Kumar, N. | - |
dc.contributor.author | Rao, C.N.R. | - |
dc.date.accessioned | 2007-06-11T09:51:25Z | - |
dc.date.available | 2007-06-11T09:51:25Z | - |
dc.date.issued | 1997-03 | - |
dc.identifier.citation | Journal of Solid State Chemistry, 1997, Vol.129, p363-366 | en |
dc.identifier.issn | 0022-4596 | - |
dc.identifier.issn | 1095-726X (Online) | - |
dc.identifier.uri | http://hdl.handle.net/2289/2729 | - |
dc.description | Restricted Access. | en |
dc.description.abstract | Charge ordering in rare earth manganates of the typeLn0.5A0.5MnO3(Ln=rare earth,A=alkaline earth) is highly sensitive to the average radius of theA-site cations, left angle bracketrAright-pointing angle bracket. In the small left angle bracketrAright-pointing angle bracket regime (e.g., Y0.5Ca0.5MnO3), charge ordering occurs in the paramagnetic state, the transformation to an antiferro-magnetic state occurring at still lower temperatures. At moderate left angle bracketrAright-pointing angle bracket values (e.g., Nd0.5Sr0.5MnO3), a ferromagnetic metallic state transforms to a charge-ordered antiferromagnetic state with cooling. These two distinct types of charge ordering and associated properties are explained in terms of the variation of the exchange couplingsJFMandJAFMwith left angle bracketrAright-pointing angle bracket and the invariance of the single-ion Jahn–Teller energy with left angle bracketrAright-pointing angle bracket. A qualitative temperature–left angle bracketrAright-pointing angle bracket phase diagram, consistent with the experimental observations, has been constructed to describe the properties of the manganates in the different left angle bracketrAright-pointing angle bracket regimes. | en |
dc.format.extent | 244853 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | Elsevier B.V. | en |
dc.relation.uri | http://dx.doi.org/10.1006/jssc.1997.7351 | en |
dc.rights | 1997 Elsevier B.V. | en |
dc.title | The Nature of Charge Ordering in Rare Earth Manganates and Its Strong Dependence on the Size of the A-Site Cations | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (TP) |
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File | Description | Size | Format | |
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1997 JSSC V129 p363.pdf Restricted Access | Restricted Access | 239.11 kB | Adobe PDF | View/Open Request a copy |
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