Phase Transition in Lead Zirconate

Sawaguchi, E.; Shirane, G.; Takagi, Yutaka

doi:10.1143/jpsj.6.333

Cited by 136 publications

(48 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless its dielectric [33][34][35][36], piezoelectric [37] and structural [38][39][40] properties as well as the ones with \10% of PbTiO 3 [9] were studied as early as the 50s. The existence of a ferroelectric rhombohedral phase on a narrow range of temperature (503-506 K upon heating and 505-500 K upon cooling) between the paraand antiferroelectric phases was confirmed later [41][42][43] and a detailed study of the phase transitions by combined X-ray diffraction, dielectric and birefringence measurements determined the displacement of lead atoms (described by Kittel's theory of antiferroelectricity [44]) as well as the oxygen octahedra rotation [45].…”

Section: Temperature-composition Phase Diagrammentioning

confidence: 99%

Strain on ferroelectric thin films

Janolin

2009

J Mater Sci

View full text Add to dashboard Cite

Strain engineering aims to take advantage of the stress field imposed by substrates on thin films. It requires an understanding of the consequences of stress fields on the physical properties of the deposited materials. This is achieved in ferroelectric thin films through the use of misfit-strain phase diagrams that show the stability regions for the possible phases. These encompass bulk phases as well as new ones exhibiting symmetries that are not present in the bulk. For the solid solution lead zirconate-lead titanate, Pb(Zr 1-x Ti x )O 3 , monoclinic phases found in the bulk morphotropic phase boundary region and associated to concentrations exhibiting the highest properties can be stabilized on a wider range of composition in thin films. In addition, phases of lower symmetry can be stabilized through the use of anisotropic biaxial stress fields, generated by orthorhombic substrates for example. Another crucial aspect of the influence of biaxial stress fields is the generation of domain structures. Theoretical tools as well as experimental verifications have provided much insight on the underlying physics. We, therefore, present here an overview of the influence of both iso-and anisotropic biaxial stress fields on the structures and properties of ferroelectric thin films exemplified on Pb(Zr 1-x Ti x )O 3 .

show abstract

Section: Temperature-composition Phase Diagrammentioning

confidence: 99%

Strain on ferroelectric thin films

Janolin

2009

J Mater Sci

View full text Add to dashboard Cite

show abstract

“…To show these peculiar volume changes from another viewpoint, we have compared the actual volume with the extrapolated volume from the cubic phase and estimated the anomalous volume expansion or contraction associated with the ferroelectric or antiferroelectric dipole arrangement. The results are shown in AC7 Table 1 together with those of pure PbZrO3 (Sawaguchi, 1952). Estimated volume expansion coefficients in the lowest phase and in the cubic phase for these three compounds are shown in Table 2.…”

Section: Phase Transition In (Pb95-srs)zr03mentioning

confidence: 99%

“…It was shown that there exists a large volume expansion at the transition point and that the extra lines observed in the antiferroelectric phase disappear completely in the cubic region above the Curie point. Recently, a more detailed X-ray study of the variation of the lattice parameters near the Curie point was made by Sawaguchi (1952) on a high-purity ceramic specimen.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, in the course of the dielectric study of pure PbZrOa (Shirane, Sawaguchi & Takagi, 1951) we found that the specimen is sometimes reduced to powder state by the repeated applications of a strong a.c. field which causes the forced transition. Now this phenomenon can be understood if we take into account the fact that the forced transition is accompanied by a large volume change of about 0.5 kX.…”

mentioning

confidence: 99%

See 1 more Smart Citation

X-ray study of phase transitions in PbZrO₃containing Ba or Sr

Shirane¹,

Hoshino²

1954

Acta Cryst

View full text Add to dashboard Cite

The crystal structures of various phases in (Pb-Ba)ZrO a and (Pb-Sr)ZrOa systems, the dielectric properties of which were reported previously, have been studied by the powder diffraction method. A crystal structure of a ferroelectric intermediate phase in the (Pb-Ba)ZrOa system, which can be observed between the antiferroelectric (tetragonal) and paraelectric (cubic) phases found in pure PbZrOa when the Ba concentration exceeds 5 %, is shown to be a rhombohedral modification of the perovskite structure with a slightly less than 90 °. It is shown that, although the (Pb-Ba)ZrOa compositions from pure PbZrO 3 to (Pb95-Ba5)Zr0a do not show this intermediate phase, the application of a strong d.c. field can produce the rhombohedral phase just below their Curie temperatures. A crystal structure of an intermediate antiferroelectric phase in the (Pb-Sr)ZrO 3 system, which begins to appear when the concentration of Sr is as small as 1%, is found to have a tetragonal lattice with c/a slightly less than unity. The observed superlattice lines in this phase are different from those of the antiferroelectric phase in pure PbZrO 8.

show abstract

“…• C. [9][10][11][12] At room temperature (RT), PZO possesses an orthorhombic structure (a ∼ 5.88Å, b ∼ 11.78Å, and c ∼ 8.22Å) with the AFE axis lying in the ab-plane of the unit cell. The orthorhombic unit cell of PZO is commonly represented as a pseudocubic unit cell with a pc ∼ 4.16Å.…”

Section: Introductionmentioning

confidence: 99%