{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T05:24:06Z","timestamp":1771910646851,"version":"3.50.1"},"reference-count":23,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2018,2,10]],"date-time":"2018-02-10T00:00:00Z","timestamp":1518220800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Crystals"],"abstract":"<jats:p>The antipolar orthorhombic Pnma phase with the      2   a p  \u00d7 4  a p  \u00d7 2  2   a p      superstructure (ap ~4 \u00c5 is the pseudocubic perovskite unit-cell parameter) is observed in many perovskite compositions derived from BiFeO3. Temperature-induced structural transformations in metastable perovskite solid solutions with the Pnma structure corresponding to the range of 0.30 \u2264 y \u2264 0.60 of the (1\u2212y)BiFeO3-yBiScO3 quasi binary system were studied using temperature X-ray and neutron powder diffraction. These compositions cannot be prepared in bulk form at ambient pressure but can be stabilized in the Pnma phase by means of quenching after synthesis under high pressure. The compositions were investigated in situ between 1.5 K and the temperature of the stability limit of their metastable phases (about 870\u2013920 K). It has been found that heating the as-prepared compositions with the Pnma phase leads to formation of the rhombohedral R3c phase (     2   a p  \u00d7  2   a p  \u00d7 2  3   a p     ), which, on cooling down to room temperature, either remains or transforms into a polar orthorhombic Ima2 phase (    2  a p  \u00d7  2   a p  \u00d7  2   a p     ). The observed phase transformations in the BiFe1\u2212yScyO3 perovskite series on heating and on cooling are considered in terms of geometrical factors.<\/jats:p>","DOI":"10.3390\/cryst8020091","type":"journal-article","created":{"date-parts":[[2018,2,12]],"date-time":"2018-02-12T10:50:38Z","timestamp":1518432638000},"page":"91","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Temperature-Induced Reversible and Irreversible Transitions between Metastable Perovskite Phases in the BiFe1\u2212yScyO3 Solid Solutions"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5386-0280","authenticated-orcid":false,"given":"Andrei","family":"Salak","sequence":"first","affiliation":[{"name":"Department of Materials and Ceramic Engineering and CICECO\u2014Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal"}]},{"given":"Dmitry","family":"Khalyavin","sequence":"additional","affiliation":[{"name":"ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK"}]},{"given":"Edwin","family":"Eardley","sequence":"additional","affiliation":[{"name":"Element Six UK Ltd., Global Innovation Centre, Harwell Oxford, Didcot OX11 0QR, UK"}]},{"given":"Nikolai","family":"Olekhnovich","sequence":"additional","affiliation":[{"name":"Scientific-Practical Materials Research Centre of NAS of Belarus, P. Brovka Street, 19, Minsk 220072, Belarus"}]},{"given":"Anatoli","family":"Pushkarev","sequence":"additional","affiliation":[{"name":"Scientific-Practical Materials Research Centre of NAS of Belarus, P. Brovka Street, 19, Minsk 220072, Belarus"}]},{"given":"Yury","family":"Radyush","sequence":"additional","affiliation":[{"name":"Scientific-Practical Materials Research Centre of NAS of Belarus, P. Brovka Street, 19, Minsk 220072, Belarus"}]},{"given":"Aleksandr","family":"Shilin","sequence":"additional","affiliation":[{"name":"Institute of Technical Acoustics of NAS of Belarus, Lyudnikov Avenue, 13, Vitebsk 210023, Belarus"}]},{"given":"Vasili","family":"Rubanik","sequence":"additional","affiliation":[{"name":"Institute of Technical Acoustics of NAS of Belarus, Lyudnikov Avenue, 13, Vitebsk 210023, Belarus"}]}],"member":"1968","published-online":{"date-parts":[[2018,2,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1080\/10584587.2011.574986","article-title":"BiFeO3: A review on synthesis, doping and crystal structure","volume":"126","author":"Silva","year":"2011","journal-title":"Integr. Ferroelectr."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1109\/TUFFC.2014.006668","article-title":"Composition-driven structural phase transitions in rare-earth-doped BiFeO3 ceramics: A review","volume":"62","author":"Arnold","year":"2015","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"582","DOI":"10.1134\/S106378340903024X","article-title":"Impedance spectroscopy of dielectric properties of perovskite ceramics Bi(Mg1\/2Ti1\/2)O3","volume":"51","author":"Olekhnovich","year":"2009","journal-title":"Phys. Solid State"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"4987","DOI":"10.1021\/cm061085r","article-title":"Bi2ZnTiO6: A lead-free closed-shell polar perovskite with a calculated ionic polarization of 150 \u03bcC cm\u22122","volume":"18","author":"Suchomel","year":"2006","journal-title":"Chem. Mater."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"014431","DOI":"10.1103\/PhysRevB.88.014431","article-title":"Thermally activated field-dependent magnetization reversal in bulk BiFe0.5Mn0.5O3","volume":"88","author":"Delmonte","year":"2013","journal-title":"Phys. Rev. B"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"286002","DOI":"10.1088\/0953-8984\/27\/28\/286002","article-title":"Field effects on spontaneous magnetization reversal of bulk BiFe0.5Mn0.5O3, an effective strategy for the study of magnetic disordered systems","volume":"27","author":"Delmonte","year":"2015","journal-title":"J. Phys. Condens. Matter"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"6308","DOI":"10.1021\/acs.inorgchem.6b00961","article-title":"Poling-written ferroelectricity in bulk multiferroic double-perovskite BiFe0.5Mn0.5O3","volume":"55","author":"Delmonte","year":"2016","journal-title":"Inorg. Chem."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1080\/00150190390206293","article-title":"High pressure synthesis, lattice distortion, and dielectric properties of a perovskite Bi(Ni1\/2Ti1\/2)O3","volume":"286","author":"Inaguma","year":"2003","journal-title":"Ferroelectrics"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"112909","DOI":"10.1063\/1.2713757","article-title":"High pressure bulk synthesis and characterization of the predicted multiferroic Bi(Fe1\/2Cr1\/2)O3","volume":"90","author":"Suchomel","year":"2007","journal-title":"Appl. Phys. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"100416","DOI":"10.1103\/PhysRevB.82.100416","article-title":"Temperature-induced magnetization reversal in BiFe0.5Mn0.5O3 synthesized at high pressure","volume":"82","author":"Mandal","year":"2010","journal-title":"Phys. Rev. B"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"174414","DOI":"10.1103\/PhysRevB.89.174414","article-title":"Polar and antipolar polymorphs of metastable perovskite BiFe0.5Sc0.5O3","volume":"89","author":"Khalyavin","year":"2014","journal-title":"Phys. Rev. B"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1177","DOI":"10.1016\/j.jmmm.2006.10.287","article-title":"Magnetic and structural properties of BiFe1\u2212xMnxO3","volume":"310","author":"Azuma","year":"2007","journal-title":"J. Magn. Magn. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"7579","DOI":"10.1143\/JJAP.47.7579","article-title":"Rhombohedral-tetragonal phase boundary with high Curie temperature in (1\u2212x)BiCoO3-xBiFeO3 solid solution","volume":"47","author":"Azuma","year":"2008","journal-title":"Jpn. J. Appl. Phys."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"3056","DOI":"10.1021\/cm301603v","article-title":"BiGaO3-based perovskites: A large family of polar materials","volume":"24","author":"Belik","year":"2012","journal-title":"Chem. Mater."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1021\/cm1030975","article-title":"Structural evolution of the BiFeO3-LaFeO3 system","volume":"23","author":"Rusakov","year":"2011","journal-title":"Chem. Mater."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"112903","DOI":"10.1063\/1.3097222","article-title":"Nd-doped BiFeO3 ceramics with antipolar order","volume":"94","author":"Karimi","year":"2009","journal-title":"Appl. Phys. Lett."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"2166","DOI":"10.1021\/cm1036925","article-title":"Displacive phase transitions and magnetic structures in Nd-substituted BiFeO3","volume":"23","author":"Levin","year":"2011","journal-title":"Chem. Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"4505","DOI":"10.1021\/cm201774y","article-title":"Structure and magnetic properties of BiFe0.75Mn0.25O3 perovskite prepared at ambient and high pressure","volume":"23","author":"Belik","year":"2011","journal-title":"Chem. Mater."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1016\/j.jssc.2016.12.029","article-title":"Phase formation in the (1\u2212y)BiFeO3-yBiScO3 system under ambient and high pressure","volume":"247","author":"Salak","year":"2017","journal-title":"J. Solid State Chem."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"054110","DOI":"10.1103\/PhysRevB.90.054110","article-title":"Complex antipolar \n          \n            \n              \n                \n                  2\n                \n                \u00d7\n                4\n                \u00d7\n                2\n                \n                  2\n                \n              \n            \n          \n         structure with Pnma symmetry in BiFeO3 and BiFe1\/2Sc1\/2O3: First-principles calculations","volume":"90","author":"Prosandeev","year":"2014","journal-title":"Phys. Rev. B"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1080\/10448632.2011.569650","article-title":"Wish: The new powder and single crystal magnetic diffractometer on the second target station","volume":"22","author":"Chapon","year":"2011","journal-title":"Neutron News"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/0921-4526(93)90108-I","article-title":"Recent advances in magnetic structure determination by neutron powder diffraction","volume":"192","year":"1993","journal-title":"Phys. B Condens. Matter"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"7977","DOI":"10.1002\/anie.201202644","article-title":"Polarization rotation in the monoclinic perovskite BiCo1\u2212xFexO3","volume":"51","author":"Oka","year":"2012","journal-title":"Angew. Chem. Int. Ed."}],"container-title":["Crystals"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4352\/8\/2\/91\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T14:54:34Z","timestamp":1760194474000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4352\/8\/2\/91"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,2,10]]},"references-count":23,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2018,2]]}},"alternative-id":["cryst8020091"],"URL":"https:\/\/doi.org\/10.3390\/cryst8020091","relation":{},"ISSN":["2073-4352"],"issn-type":[{"value":"2073-4352","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,2,10]]}}}