Phase Transition in K 2 Fe(SO 4 ) 2 ·4H 2 O.

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Title: Phase Transition in K 2 Fe(SO 4 ) 2 ·4H 2 O.
Authors: Ishigami, H.1, Sumita, M.1, Shiro, M.2, Hikita, T.3, Sato, S.1, Tanimoto, M.4
Source: Ferroelectrics. 2003, Vol. 285 Issue 1, p133. 5p.
Subjects: Phase transitions, Atoms, Scientific experimentation, Ferroelectricity
Abstract: In a Tutton's-salt like family with Fe atom, three compounds K 2 Fe(SO 4 ) 2 · n H 2 O ( n = 2,4, or 6) are known. The phase transition in K 2 Fe(SO 4 ) 2 ·2H 2 O was already examined by the authors' group. Anomalies of both specific heat and dielectric constant were recently found on K 2 Fe(SO 4 ) 2 ·4H 2 O at 283 K. Structure analyses were performed, therefore, at 300 K (monoclinic, space group C 2/ m ; a = 11.853(1), b = 9.544(1), c = 9.951(1)å, β = 94.81(1)°, V = 1121.7(5)å 3 ; Z = 4) and 123 K ( P 2 1 / a , Z = 4). [ABSTRACT FROM AUTHOR]
Copyright of Ferroelectrics is the property of Taylor & Francis Ltd 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.)
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  Data: In a Tutton's-salt like family with Fe atom, three compounds K 2 Fe(SO 4 ) 2 · n H 2 O ( n = 2,4, or 6) are known. The phase transition in K 2 Fe(SO 4 ) 2 ·2H 2 O was already examined by the authors' group. Anomalies of both specific heat and dielectric constant were recently found on K 2 Fe(SO 4 ) 2 ·4H 2 O at 283 K. Structure analyses were performed, therefore, at 300 K (monoclinic, space group C 2/ m ; a = 11.853(1), b = 9.544(1), c = 9.951(1)å, β = 94.81(1)°, V = 1121.7(5)å 3 ; Z = 4) and 123 K ( P 2 1 / a , Z = 4). [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Ferroelectrics is the property of Taylor & Francis Ltd 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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        Text: English
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