First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)]
In this work we explore the overall structural behaviour of the [(CH 3)2NH2][Mn(HCOO)3] multiferroic compound across the temperature range where its ferroelectric transition takes place by means of calorimetry, thermal expansion measurements and variable temperature powder and single crystal X-ray d...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2014
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| _version_ | 1826299015289896960 |
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| author | Sanchez-Andujar, M Gomez-Aguirre, L Doldan, B Yanez-Vilar, S Artiaga, R Llamas-Saiz, A Manna, R Schnelle, F Lang, M Ritter, F Haghighirad, A Senaris-Rodriguez, M |
| author_facet | Sanchez-Andujar, M Gomez-Aguirre, L Doldan, B Yanez-Vilar, S Artiaga, R Llamas-Saiz, A Manna, R Schnelle, F Lang, M Ritter, F Haghighirad, A Senaris-Rodriguez, M |
| author_sort | Sanchez-Andujar, M |
| collection | OXFORD |
| description | In this work we explore the overall structural behaviour of the [(CH 3)2NH2][Mn(HCOO)3] multiferroic compound across the temperature range where its ferroelectric transition takes place by means of calorimetry, thermal expansion measurements and variable temperature powder and single crystal X-ray diffraction. The results clearly prove the presence of a structural phase transition at Tt ~ 187 K (the temperature at which the dielectric transition occurs) that involves a symmetry change from R3c to Cc, twinning of the crystals, a discontinuous variation of the unit cell parameters and unit cell volume, and a sharp first-order-like anomaly in the thermal expansion. In addition, the calorimetric results show a 3-fold order-disorder transition. The calculated pressure dependence of the transition temperature is rather large (dTt/dP = 4.6 ± 0.1 K kbar-1) in that it should be feasible to shift it to room temperature under adequate thermodynamic conditions, for instance by application of an external pressure. © 2014 the Partner Organisations. |
| first_indexed | 2024-03-07T04:55:29Z |
| format | Journal article |
| id | oxford-uuid:d676755a-614c-4f36-8edd-34bd0898762a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:55:29Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | oxford-uuid:d676755a-614c-4f36-8edd-34bd0898762a2022-03-27T08:33:39ZFirst-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)]Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d676755a-614c-4f36-8edd-34bd0898762aEnglishSymplectic Elements at Oxford2014Sanchez-Andujar, MGomez-Aguirre, LDoldan, BYanez-Vilar, SArtiaga, RLlamas-Saiz, AManna, RSchnelle, FLang, MRitter, FHaghighirad, ASenaris-Rodriguez, MIn this work we explore the overall structural behaviour of the [(CH 3)2NH2][Mn(HCOO)3] multiferroic compound across the temperature range where its ferroelectric transition takes place by means of calorimetry, thermal expansion measurements and variable temperature powder and single crystal X-ray diffraction. The results clearly prove the presence of a structural phase transition at Tt ~ 187 K (the temperature at which the dielectric transition occurs) that involves a symmetry change from R3c to Cc, twinning of the crystals, a discontinuous variation of the unit cell parameters and unit cell volume, and a sharp first-order-like anomaly in the thermal expansion. In addition, the calorimetric results show a 3-fold order-disorder transition. The calculated pressure dependence of the transition temperature is rather large (dTt/dP = 4.6 ± 0.1 K kbar-1) in that it should be feasible to shift it to room temperature under adequate thermodynamic conditions, for instance by application of an external pressure. © 2014 the Partner Organisations. |
| spellingShingle | Sanchez-Andujar, M Gomez-Aguirre, L Doldan, B Yanez-Vilar, S Artiaga, R Llamas-Saiz, A Manna, R Schnelle, F Lang, M Ritter, F Haghighirad, A Senaris-Rodriguez, M First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)] |
| title | First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)] |
| title_full | First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)] |
| title_fullStr | First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)] |
| title_full_unstemmed | First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)] |
| title_short | First-order structural transition in the multiferroic perovskite-like formate [(CH3)(2)NH2][Mn(HCOO)(3)] |
| title_sort | first order structural transition in the multiferroic perovskite like formate ch3 2 nh2 mn hcoo 3 |
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