Lattice-Dynamical Study of the 110°K Phase Transition in SrTi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Shirane, G.; Yamada, Y.

doi:10.1103/physrev.177.858

Cited by 648 publications

(285 citation statements)

References 15 publications

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“…The angle of tilt of the octahedron about [001] is 6.5 (9) ° which is considerably larger than that found in SrTiO 3 at 110 K [ 1.4 (4) ° (Shirane & Yamada, 1969)]. …”

Section: Data Collectionmentioning

confidence: 92%

“…In addition to the main reflections (all indices even) superlattice reflections with all indices odd are observed indicating antiphase (-) tilts of adjacent O octahedra. According to the classification of octahedral tilts (Glazer, 1972(Glazer, , 1976 this fact, together with the assumption of tetragonal symmetry, suggests the tilt system a°a°c -with space group I4/mcm, this structure is also found in KMnF 3 below 184 K (Minkiewicz, Fujii & Yamada, 1970) and SrTiO 3 below 110 K (Shirane & Yamada, 1969). Instead of the pseudocubic orientation it is more usual to specify the tetragonal unit cell according to axes chosen by the matrix Table 2).…”

Section: Data Collectionmentioning

confidence: 99%

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High-temperature phases of SrZrO₃

Ahtee¹,

Glazer²,

Hewat³

1978

Acta Crystallogr Sect B

108

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The high-temperature structures of SrZrO 3 have been determined by neutron powder profile refinement, and the phase transitions described by the condensation of soft vibrational modes. At 900°C, SrZrO 3 is tetragonal, I4/mcm, with an O octahedron antiphase tilt of 6.5 ° about [001], intermediate between those found in the isomorphous phases of SrTiO 3 below 110 K and KMnF 3 below 184 K. At 760°C the structure is orthorhombic Bmmb with almost equal b o and c o axes, and not tetragonal. In addition to the antiphase tilt, now 8.5 ° about 1001 I, there is an in-phase tilt of 3.1 ° about [0101. Yet a third tilt, antiphase about 1100] and identical to that about [001], is introduced at room temperature. This series of transitions indicates that the sequence of condensation of soft modes from the high-temperature cubic phase is R25, M a and finally R25 again. In addition, the two latter transitions are first order, and are accompanied by a condensation from the X-point of the Brillouin zone, which produces atomic displacements. The unusually anisotropic thermal ellipsoids provide some additional evidence for the existence of low-frequency vibrational modes.

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“…The angle of tilt of the octahedron about [001] is 6.5 (9) ° which is considerably larger than that found in SrTiO 3 at 110 K [ 1.4 (4) ° (Shirane & Yamada, 1969)]. …”

Section: Data Collectionmentioning

confidence: 92%

Section: Data Collectionmentioning

confidence: 99%

High-temperature phases of SrZrO₃

Ahtee¹,

Glazer²,

Hewat³

1978

Acta Crystallogr Sect B

108

View full text Add to dashboard Cite

show abstract

“…On the other hand, high pressure studies of the isostructural SrTiO 3 21-23 have revealed a transition to a tetragonal structure which is identical to the low temperature phase for T≤105K 24,25 . The structural similarities between SrTiO 3 and EuTiO 3 suggest that both materials can exhibit analogous behavior under hydrostatic pressure.…”

Section: Introductionmentioning

confidence: 99%

Pressure-temperature phase diagram of multiferroicEuTiO3

et al. 2015

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The structural transformation of multiferroic EuTiO3 has been intensively investigated by synchrotron x-ray diffraction at pressures up to 50.3 GPa and temperatures from 50 to 500 K. An antiferrodistortive phase transition from cubic Pm-3m to tetragonal I4/mcm space group has been observed, identical to the one that has been previously explored at ambient pressure and low temperatures. Several compression/decompression cycles at different temperatures have been carried out to accurately map the transition, and as a result a P-T phase diagram for EuTiO3 has been constructed. The observed phase transition exhibits many similarities with isostructural SrTiO3, although the absence of magnetoelectric interactions in the latter accounts for the different phase boundaries between the two materials.

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“…This transition is caused by the antiphase rotations of the oxygen octahedra around one of the [001] crystallographic directions. The rotations double the unit cell of this material [2]. Ferroelectric state in SrTiO 3 can be induced by the application of a biaxial strain [3] or by the substitution of the A-site ions by isovalent Ba 2+ , Pb 2+ , Ca 2+ , Mn 2+ [4][5][6] , Bi 3+ ions [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Local piezoelectricity in SrTiO3-BiTiO3 ceramics

Grigalaitis¹,

Bagdzevičius²,

Banys³

et al. 2014

Lith. J. Phys.

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Local piezoelectric properties of Bi-doped SrTiO 3 ceramics have been investigated by piezoresponse force microscopy. The appearance of both out-of-plane and in-plane polarization components confirmed the piezoelectric nature of the obtained signal. The absence of labyrinth-like structures in observed piezoelectric contrast is not consistent with the expected existence of a relaxor ferroelectric state in this material. The close similarity of local piezoelectric properties in Bi-doped SrTiO 3 with pure SrTiO 3 suggests that the origin of obtained piezoresponse can be attributed to the flexoelectric phenomenon. Bi-doping leads to occurrence of oxygen vacancies and negative charge on the surface of the sample.

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Lattice-Dynamical Study of the 110°K Phase Transition in SrTiO3

Cited by 648 publications

References 15 publications

High-temperature phases of SrZrO₃

High-temperature phases of SrZrO₃

Pressure-temperature phase diagram of multiferroicEuTiO3

Local piezoelectricity in SrTiO3-BiTiO3 ceramics

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Lattice-Dynamical Study of the 110°K Phase Transition in SrTiO3

Cited by 648 publications

References 15 publications

High-temperature phases of SrZrO3

High-temperature phases of SrZrO3

Pressure-temperature phase diagram of multiferroicEuTiO3

Local piezoelectricity in SrTiO3-BiTiO3 ceramics

Contact Info

Product

Resources

About

High-temperature phases of SrZrO₃

High-temperature phases of SrZrO₃