Erratum: “Monitoring of Longitudinal-Wave Velocity and Attenuation of SrTiO<sub>3</sub> at Low Temperatures Using Picosecond Ultrasound Spectroscopy”

Nagakubo, Akira; Yamamoto, Akihiro; Tanigaki, Kenichi; Ogi, Hirotsugu; Nakamura, Nobutomo; Hirao, Masahiko

doi:10.7567/jjap.53.059201

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“…Below 323 K, the LA phonons shows an anomalous behaviour with a sharp minimum in the frequency followed by a sharp maximum in width at T tr = 275 K. Such elastic anomalies are similar to those of non-doped SrTiO 3 crystal observed by pico-second ultrasound spectroscopy. 27,28) The remarkable increase of T tr by Ca doping can be caused by the smaller ionic radius of Ca ions, which induces the AFE rigid rotation of oxygen octahedral. 29) Such an increase of T tr was observed also in La doped STO.…”

Section: Resultsmentioning

confidence: 99%

Acoustic phonon anomalies in Ca doped SrTiO₃quantum ferroelectrics as studied by Brillouin light scattering

Sivasubramanian

Kojima

2020

Jpn. J. Appl. Phys.

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The cubic-tetragonal structural phase transition has been investigated in 3% Ca doped SrTiO3 crystals with perovskite structure by Brillouin light scattering in the temperature range between 90 and 500 K. The frequency and the width of longitudinal acoustic (LA) and transverse acoustic phonon modes show anomalous behaviour at Ttr = 275 K. The observed anomalies are ascribed to the structural phase transition from cubic to tetragonal phases in Ca doped SrTiO3. The behaviour of LA phonon in the critical region close to Ttr is discussed within the frame work of Landau–Khalatnikov relaxation theory. The relaxation time of the order parameter, which is calculated on the basis of the Landau–Khalatnikov type of relaxation mechanism, exhibits critical slowing down towards Ttr.

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Section: Resultsmentioning

confidence: 99%

Acoustic phonon anomalies in Ca doped SrTiO₃quantum ferroelectrics as studied by Brillouin light scattering

Sivasubramanian

Kojima

2020

Jpn. J. Appl. Phys.

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Erratum: “Monitoring of Longitudinal-Wave Velocity and Attenuation of SrTiO₃ at Low Temperatures Using Picosecond Ultrasound Spectroscopy”

Abstract: We made a mistake in the unit of the left-vertical axis in Fig. 3(b). It is not "10 4 dB/cm", but "10 4 cm ¹1 ". The corrected figure is shown below. This correction, however, never affects discussions and conclusions in this paper.

Cited by 1 publication

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Acoustic phonon anomalies in Ca doped SrTiO₃quantum ferroelectrics as studied by Brillouin light scattering

Acoustic phonon anomalies in Ca doped SrTiO₃quantum ferroelectrics as studied by Brillouin light scattering

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Erratum: “Monitoring of Longitudinal-Wave Velocity and Attenuation of SrTiO3 at Low Temperatures Using Picosecond Ultrasound Spectroscopy”

Abstract: We made a mistake in the unit of the left-vertical axis in Fig. 3(b). It is not "10 4 dB/cm", but "10 4 cm ¹1 ". The corrected figure is shown below. This correction, however, never affects discussions and conclusions in this paper.

Cited by 1 publication

References 0 publications

Acoustic phonon anomalies in Ca doped SrTiO3quantum ferroelectrics as studied by Brillouin light scattering

Acoustic phonon anomalies in Ca doped SrTiO3quantum ferroelectrics as studied by Brillouin light scattering

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Erratum: “Monitoring of Longitudinal-Wave Velocity and Attenuation of SrTiO₃ at Low Temperatures Using Picosecond Ultrasound Spectroscopy”

Acoustic phonon anomalies in Ca doped SrTiO₃quantum ferroelectrics as studied by Brillouin light scattering

Acoustic phonon anomalies in Ca doped SrTiO₃quantum ferroelectrics as studied by Brillouin light scattering