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High field magnetic properties of Ag2FeGeSe4 in the temperature range 2–300 K

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Title: High field magnetic properties of Ag2FeGeSe4 in the temperature range 2–300 K
Authors: Woolley, J.C.1, Lamarche, G.1, Lamarche, A.-M.1 glamarch@science.uottawa.ca, Rakoto, H.2, Broto, J.M.2, Quintero, M.3, Morocoima, M.3, Quintero, E.3, Gonzalez, J.3, Tovar, R.3, Cadenas, R.3, Bocoranda, P.3, Ruiz, J.3
Source: Journal of Magnetism & Magnetic Materials. Feb2003, Vol. 257 Issue 1, p87. 8p.
Subjects: Stannite, Magnetic semiconductors
Abstract: Measurements of low field static magnetic susceptibility and of magnetization with pulsed magnetic fields up to 32 T have been made as a function of temperature on polycrystalline samples of the compound Ag2FeGeSe4 (AFG) which has an orthorhombic wurtz–stannite structure. The resulting data have been used to give information on the magnetic spin-flop (SF) and magnetic saturation transitions. It was found that AFG has a Ne´el temperature of 240 K, shows mainly antiferromagnetic behaviour with a very weak superimposed ferromagnetic component down to 60 K. At 60 K, a transition occurs resulting in an appreciably larger ferromagnetic effect below the transition. The ferromagnetic component is attributed to spin canting, with the transition at 60 K due to a discontinuous change in the canting angle. Thus, the SF and saturation fields show very different behaviour below and above 60 K. Details of the magnetic B–T phase diagrams were determined for the two phases and the results compared with the predictions of theoretical uniaxial models. [Copyright &y& Elsevier]
Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 8902501
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: High field magnetic properties of Ag<subscript>2</subscript>FeGeSe<subscript>4</subscript> in the temperature range 2–300 K
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  Data: <searchLink fieldCode="AR" term="%22Woolley%2C+J%2EC%2E%22">Woolley, J.C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lamarche%2C+G%2E%22">Lamarche, G.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lamarche%2C+A%2E-M%2E%22">Lamarche, A.-M.</searchLink><relatesTo>1</relatesTo><i> glamarch@science.uottawa.ca</i><br /><searchLink fieldCode="AR" term="%22Rakoto%2C+H%2E%22">Rakoto, H.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Broto%2C+J%2EM%2E%22">Broto, J.M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Quintero%2C+M%2E%22">Quintero, M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Morocoima%2C+M%2E%22">Morocoima, M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Quintero%2C+E%2E%22">Quintero, E.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Gonzalez%2C+J%2E%22">Gonzalez, J.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Tovar%2C+R%2E%22">Tovar, R.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Cadenas%2C+R%2E%22">Cadenas, R.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Bocoranda%2C+P%2E%22">Bocoranda, P.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ruiz%2C+J%2E%22">Ruiz, J.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Magnetism+%26+Magnetic+Materials%22">Journal of Magnetism & Magnetic Materials</searchLink>. Feb2003, Vol. 257 Issue 1, p87. 8p.
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  Data: Measurements of low field static magnetic susceptibility and of magnetization with pulsed magnetic fields up to 32 T have been made as a function of temperature on polycrystalline samples of the compound Ag2FeGeSe4 (AFG) which has an orthorhombic wurtz–stannite structure. The resulting data have been used to give information on the magnetic spin-flop (SF) and magnetic saturation transitions. It was found that AFG has a Ne´el temperature of 240 K, shows mainly antiferromagnetic behaviour with a very weak superimposed ferromagnetic component down to 60 K. At 60 K, a transition occurs resulting in an appreciably larger ferromagnetic effect below the transition. The ferromagnetic component is attributed to spin canting, with the transition at 60 K due to a discontinuous change in the canting angle. Thus, the SF and saturation fields show very different behaviour below and above 60 K. Details of the magnetic <f>B–T</f> phase diagrams were determined for the two phases and the results compared with the predictions of theoretical uniaxial models. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/S0304-8853(02)01051-X
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        Text: English
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              Text: Feb2003
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