Structural and magnetic phases of Bi1−xAxFeO3− δ (A = Sr, Pb) perovskites

Troyanchuk, I. O.; Bushinsky, M. V.; Karpinsky, D. V.; Sirenko, V. A.; Sikolenko, V.; Ефимов, В. В.

doi:10.1140/epjb/e2010-00004-y

Cited by 29 publications

(19 citation statements)

References 23 publications

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“…3)]. Such a magnetic behavior is very typical of the lightly doped Bi 1-x A x FeO 3 (A = lanthanide, Ca, Sr, Pb) multiferroics [28][29][30][31]. The results of our measurements (Figs.…”

Section: Resultssupporting

confidence: 57%

Antiferromagnetic–weak ferromagnetic transition in lightly doped BiFeO3: role of structural defects

Khomchenko

Paixão

2015

J Mater Sci

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Chemical substitution is commonly considered as favoring the suppression of the cycloidal magnetic structure specific to the polar phase of multiferroic BiFeO 3 . To reveal the factors underlying the substitution-driven instability of the antiferromagnetic order, synthesis and investigation of the crystal structure, microstructure, local ferroelectric, and magnetic properties of the ceramic samples of Bi 0.95 A 0.05 Fe 0.95 B 0.05 O 3 (A = Pr, Ca; B = Mn, Ti) were carried out. The investigation did not reveal any link between the size of the substituting ions and the magnetic behavior of the compounds. However, it found a clear correlation between the magnetic ground state and the morphology/defect structure of the ceramics, as traced by the scanning probe microscopy. The results of the work suggest that the magnetic cycloid should be less stable in those doped materials, in which the charge-compensating mechanism involves the formation of crystal lattice defects.

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“…3)]. Such a magnetic behavior is very typical of the lightly doped Bi 1-x A x FeO 3 (A = lanthanide, Ca, Sr, Pb) multiferroics [28][29][30][31]. The results of our measurements (Figs.…”

Section: Resultssupporting

confidence: 57%

Antiferromagnetic–weak ferromagnetic transition in lightly doped BiFeO3: role of structural defects

Khomchenko

Paixão

2015

J Mater Sci

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“…XRD data pattern of both BBFCO, BBFMO the samples revealed the formation of nearly singlephase rhombohedral structure that can be described in hexagonal frame of reference with R3c space group. The diffraction peaks of BSFO samples revealed the pseudotetragonal structure (P4/mmm) are good matches with the earlier reported data [15]. Henceforth, the BSFO samples as prepared by the sol-gel method have a single-phase pseudotetragonal structure.…”

Section: Resultssupporting

confidence: 89%

Chemical Synthesis and Structural Properties of Nd, Gd and Dy Doped BiFeO3 Lead Free Ceramics

Kumar¹,

Varshney²

2017

J Powder Metall Min

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“…Substitution of bismuth ions with aliovalent alkali-earth ions Sr 2+ and Ba 2+ having ionic radii larger than that of Bi 3+ ions leads to increase of the unit cell volume and causes structural transition from the polar rhombohedral phase to either the pseudo-cubic [32,33] or tetragonal phase [19,34]. Structural transformation occurs at the doping level of about 15-20%, regardless of the method used to prepare the compounds.…”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that the threshold dopant concentration inducing the phase transitions to pseudo-cubic phase significantly depends on preparation conditions, oxygen content, and average grain size of the compounds. The mentioned factors hamper a determination of crystal structure evolution across the mentioned transitions and lead to ambiguous results in the literature [19,27,33].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, in compounds Bi 1−x Ba x Fe 1−x Ti x O 3 , an increase of the dopant content leads to structural transition from the polar rhombohedral phase to the polar tetragonal phase through the formation of an intermediate (pseudo)-cubic structure [8,[37][38][39]. The compounds in vicinity of the rhombohedral-pseudocubic phase boundary are characterized by increased piezoelectric coefficient d 33 , reaching maximum value of about 250 pm/V in the compounds with 33% of BaTiO 3 content. It should be noted that structural state of the solid solution with one-third of BaTiO 3 content is characterized by the dominant pseudocubic phase with minor (~35%) fraction of the rhombohedral phase [37][38][39].…”

Section: Introductionmentioning

confidence: 99%

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Peculiarities of the Crystal Structure Evolution of BiFeO3–BaTiO3 Ceramics across Structural Phase Transitions

et al. 2020

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Evolution of the crystal structure of ceramics BiFeO3–BaTiO3 across the morphotropic phase boundary was analyzed using the results of macroscopic measuring techniques such as X-ray diffraction, differential scanning calorimetry, and differential thermal analysis, as well as the data obtained by local scale methods of scanning probe microscopy. The obtained results allowed to specify the concentration and temperature regions of the single phase and phase coexistent regions as well as to clarify a modification of the structural parameters across the rhombohedral–cubic phase boundary. The structural data show unexpected strengthening of structural distortion specific for the rhombohedral phase, which occurs upon dopant concentration and temperature-driven phase transitions to the cubic phase. The obtained results point to the non-monotonous character of the phase evolution, which is specific for metastable phases. The compounds with metastable structural state are characterized by enhanced sensitivity to external stimuli, which significantly expands the perspectives of their particular use.

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Structural and magnetic phases of Bi1−xAxFeO3− δ (A = Sr, Pb) perovskites

Cited by 29 publications

References 23 publications

Antiferromagnetic–weak ferromagnetic transition in lightly doped BiFeO3: role of structural defects

Antiferromagnetic–weak ferromagnetic transition in lightly doped BiFeO3: role of structural defects

Chemical Synthesis and Structural Properties of Nd, Gd and Dy Doped BiFeO3 Lead Free Ceramics

Peculiarities of the Crystal Structure Evolution of BiFeO3–BaTiO3 Ceramics across Structural Phase Transitions

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