Ferroelectric phase transition in LaBSiO5 crystals from results of thermal and dielectric measurements

Strukov, B. A.; Ragula, E. P.; Stefanovich, S. Yu.; Shnaĭdshteĭn, I. V.; Arkhangel’skaya, S. V.; Onodera, Akira

doi:10.1134/1.1130518

Cited by 14 publications

(13 citation statements)

References 5 publications

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“…The dielectric permittivity anomaly in LaBSiO 5 reported by Ono et al (1996) was con®rmed by Strukov et al (1998), with transition temperature 412 K and entropy change ÁS = 1.05 (3) J mol À1 K À1 , in agreement with the possibility noted earlier (CAMIA 31 147) that LaBSiO 5 may be ferroelectric. Stefanovich et al (1998) report that LaBSiO 5 generates second harmonics robustly from 300 to $415 K, at which temperature their occurence decreases sharply by a factor of $4 and remains constant to at least 520 K. The physical evidence of a phase transition in LaBSiO 5 at $410 K is hence indubitable.…”

Section: Stillwellite Familysupporting

confidence: 87%

“…PrBGeO 5 phase II. Strukov et al (1997) report a ®rstorder ferroelectric±ferroelectric phase transition in PrBGeO 5 at $800 K, with an integral change in cell volume, and a second-order ferroelectric±nonferroelectric phase transition at T c = 1016 K. Belokoneva et al (1998) also detected phase transitions at $823 and $1023 K and determined the structure of all three phases in the course of a neutron powder diffraction study. Phase II forms above 823 K in space group P3 1 , and phase III forms below 823 K (see x3.1.4).…”

Section: Stillwellite Familymentioning

confidence: 95%

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Systematic prediction of new ferroelectrics in space groups P3₁ and P3₂

2003

Acta Crystallogr Sect B

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Release 2002/2 of the Inorganic Crystal Structure Database (FIZ Karlsruhe, Germany, and Institute Laue-Langevin, Grenoble, France) contains 62 entries in space group P3(1) and ten entries in space group P3(2) for 49 different materials including eight families with two or more isostructural members. The structural criteria for ferroelectricity are satisfied for 16 new structure types at a confidence level that depends on the reliability of each determination. LaBGeO(5), a mineral with stillwellite structure, was previously reported as ferroelectric and forms an additional family with seven other members or related structures that satisfy the criteria. Ten structures reported in space group P3(1) or P3(2) are dubious or incorrect, with atomic coordinates that satisfy supergroup symmetry. One material is probably pyroelectric but is unlikely to become ferroelectric, and three others are either incompletely solved or incompletely refined. Among the predicted new ferroelectrics are Cu(2)BaGeS(4,) Fe(3)(Fe,Si)O(4)(OH)(5), Se(4)S(5), K(2)HCr(2)AsO(10), IV-RbNO(3), Rb(2)Sc(NO(3))(5), Na(3)ReO(5), Nd(14)(GeO(4))(2)(BO(3))(6)O(8), CsHgCl(3,) Ba(2)Cu(2)AlF(11), KYF(4), SrS(2)O(6).4H(2)O, Cu(3)PbTeO(6)(OH)(2), ReH(CO)(4), Ni(2)(NH(3))(9)Mo(CN)(8).2H(2)O and the 6T polytype of Ca(1.89)Ta(1.80)Sm(0.16)Ti(0.10)O(7), in addition to beta-LaBSiO(5), PbBAsO(5) and BaBAsO(5) in the stillwellite family.

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Section: Stillwellite Familysupporting

confidence: 87%

Section: Stillwellite Familymentioning

confidence: 95%

Systematic prediction of new ferroelectrics in space groups P3₁ and P3₂

2003

Acta Crystallogr Sect B

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“…The inset to Figure 3 compares temperature dependences of the heat capacity for the sample doped with 5 mol % Mn measured under cooling and heating. It can be seen the phase transition temperature is 5 K higher on heating, compared with that undercooling, which is characteristic of the first-order phase transition [29]. Similar dependence was also observed near the cubic-to-tetragonal phase transition for 10 mol % Mn samples.…”

Section: Resultsmentioning

confidence: 60%

Mn-Doped BaTiO3 Ceramics: Thermal and Electrical Properties for Multicaloric Applications

et al. 2019

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Multiferroic materials are widely used in microelectronics because they are sensitive to elastic, magnetic, and electric fields and there is an intrinsic coupling between them. In particular, transition metal-doped BaTiO3 is considered as a viable multiferroic because of the simultaneous presence of ferroelectricity and magnetism. In this work, we study the electrical and thermal properties of Mn-doped BaTiO3 ceramics that can be used for multicaloric applications. We found that Mn doping leads to the broadening and shifting of the phase transition accompanied with simultaneous decrease of latent heat and entropy. Mn doping causes a decrease in the bulk resistivity while contact resistance remains intact. Doped ceramics can withstand high electric fields (up to 40 kV/cm) and exhibit linear I-V characteristics followed by the Schottky limited current in contrast to earlier observations. As such, these ceramics are promising for multicaloric applications.

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“…They are surrounded by nine oxygen atoms [38] (Table 1) [39]. For temperature above 140°C (for RE = La), a phase transition of stillwellite toward a monoclinic structure (space group P3121) is observed, leading to a slight distortion of the structure but maintaining the helical chains of rings [40,41]. Stillwellite is of interest because of its ferroelectric, non-linear optical and piezoelectric properties [42,43].…”

Section: Crystalline Phasesmentioning

confidence: 99%

Exploration of glass domain in the SiO2-B2O3-La2O3 system

Trégouët

Caurant

Majérus

et al. 2017

Journal of Non-Crystalline Solids

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The existence of a relatively wide glass domain has been put in evidence in the SiO2-B2O3-La2O3 ternary system, using a melt-quenching method. This domain extends from a region surrounding the lanthanum metaborate (LaB3O6) composition in the B2O3-La2O3 binary system to ternary compositions bearing up to 39 mol% SiO2. Outside this domain, phase separation phenomena and/or crystallization of La-rich borate (LaBO3) and borosilicate (La3Si2BO10) phases are observed during quenching. The evolution of glass transition temperature (Tg) with composition in the glassy domain has been studied and discussed according to structural changes put in evidence by 11 B MAS NMR. Moreover, the evolution of the thermal stability of a series of glasses derived from a lanthanum metaborate glass by substituting B2O3 by increasing amount of SiO2 (up to 36 mol% SiO2) was studied by DTA and thermal treatments followed by characterization by XRD and Raman spectroscopy. In spite of silica-enrichment along the glass series, the first phases crystallizing during heating were always lanthanum borates (LaB3O6, LaBO3) according the following sequence when SiO2 content increases:

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Ferroelectric phase transition in LaBSiO5 crystals from results of thermal and dielectric measurements

Cited by 14 publications

References 5 publications

Systematic prediction of new ferroelectrics in space groups P3₁ and P3₂

Systematic prediction of new ferroelectrics in space groups P3₁ and P3₂

Mn-Doped BaTiO3 Ceramics: Thermal and Electrical Properties for Multicaloric Applications

Exploration of glass domain in the SiO2-B2O3-La2O3 system

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Ferroelectric phase transition in LaBSiO5 crystals from results of thermal and dielectric measurements

Cited by 14 publications

References 5 publications

Systematic prediction of new ferroelectrics in space groups P31 and P32

Systematic prediction of new ferroelectrics in space groups P31 and P32

Mn-Doped BaTiO3 Ceramics: Thermal and Electrical Properties for Multicaloric Applications

Exploration of glass domain in the SiO2-B2O3-La2O3 system

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Product

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Systematic prediction of new ferroelectrics in space groups P3₁ and P3₂

Systematic prediction of new ferroelectrics in space groups P3₁ and P3₂