LOW BIREFRINGENT Sm-DOPED ORTHOFERRITES

Clover, R. B.; Rayl, M.; Gutman, D. B.

doi:10.1063/1.3699435

Cited by 4 publications

(5 citation statements)

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“…Our data for (Sm,Tb)FeO 3 are in line with this expectation. However, the absolute value of the polarization rotation angle β max in (Sm,Pr)FeO 3 is much larger, confirming that, in agreement with [38] and [39], the birefringence ∆n ab is strongly reduced.…”

Section: Samplessupporting

confidence: 55%

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Effect of laser pulse propagation on ultrafast magnetization dynamics in a birefringent medium

Jong¹,

Kalashnikova

Pisarev

et al. 2017

J. Phys.: Condens. Matter

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Light propagation effects can strongly influence the excitation and the detection of laser-induced magnetization dynamics. We investigated experimentally and analytically the effects of crystallographic linear birefringence on the excitation and detection of ultrafast magnetization dynamics in the rare-earth orthoferrites (SmPr)FeO and (SmTb)FeO, which possess weak and strong linear birefringence, respectively. Our finding is that the effect of linear birefringence on the result of a magneto-optical pump-probe experiment strongly depends on the mechanism of excitation. When magnetization dynamics, probed by means of the Faraday effect, is excited via a rapid, heat-induced phase transition, the measured rotation of the probe pulse polarization is strongly suppressed due to the birefringence. This contrasts with the situation for magnetization dynamics induced by the ultrafast inverse Faraday effect, where the corresponding probe polarization rotation values were larger in the orthoferrite with strong linear birefringence. We show that this striking difference results from an interplay between the polarization transformations experienced by pump and probe pulses in the birefringent medium.

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Section: Samplessupporting

confidence: 55%

“…Importantly, the strength of their crystallographic birefringence can be effectively tailored by changing the sample composition. In particular, in (Sm,Pr)FeO 3 the birefringence can effectively be tuned to zero by bringing the fraction of Pr-ions close to 0.5 [38,39].…”

Section: Samplesmentioning

confidence: 99%

Effect of laser pulse propagation on ultrafast magnetization dynamics in a birefringent medium

Jong¹,

Kalashnikova

Pisarev

et al. 2017

J. Phys.: Condens. Matter

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“…8). Such a behavior can be related with the specific behavior of distortions of the FeO 6 octahedra in the series of orthoferrites [58]. Indeed, the linear birefringence is determined by the anisotropic part of the permittivity tensor, which, in turn, for the contribution of p − d CT transitions is determined by the anisotropic part of the FeO 6 octahedron polarizability tensor.…”

Section: A Natural Birefringence Of Orthoferritesmentioning

confidence: 98%

“…However, the natural birefringence in the ab plane of orthoferrites at T ≈ 300 K exhibits a puzzling behavior, with a change in sign when passing from LaFeO 3 to LuFeO 3 , with a more or less regular change in the value from −4 × 10 −2 to +4 × 10 −2 [61,62] (see Figure 8). Such a behavior can be related to the specific behavior of distortions of the FeO 6 octahedra in the series of orthoferrites [64]. Indeed, the linear birefringence is determined by the anisotropic part of the permittivity tensor, which, in turn, for the contribution of p − d CT transitions, is determined by the anisotropic part of the FeO 6 octahedron polarizability tensor.…”

Section: Natural Birefringence Of Orthoferritesmentioning

confidence: 99%

Structure–Property Relationships for Weak Ferromagnetic Perovskites

Moskvin

2021

Magnetochemistry

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Despite several decades of active experimental and theoretical studies of rare-earth orthoferrites, the mechanism of the formation of their specific magnetic, magnetoelastic, optical, and magneto-optical properties remains a subject of discussion. This paper provides an overview of simple theoretical model approaches to quantitatively describing the structure–property relationships—in particular, the interplay between FeO6 octahedral deformations/rotations and the main magnetic and optic characteristics, such as Néel temperature, overt and hidden canting of magnetic sublattices, magnetic and magnetoelastic anisotropy, and optic and photoelastic anisotropy.

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“…Owing to the balance between Sm and Pr contents, this orthoferrite possesses a low linear crystallographic birefringence, which results in a huge effective Faraday rotation [12,13]. In general, the iron Fe 3þ ions in RE orthoferrites form two pairs of sublattices S 1 and S 2 , which are coupled antiferromagnetically.…”

mentioning

confidence: 99%

New Optical Route to Magnetic State Control

Kida¹

2012

Physics

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Time-resolved magneto-optical imaging of laser-excited rare-earth orthoferrite ðSmPrÞFeO 3 demonstrates that a single 60 fs circularly polarized laser pulse is capable of creating a magnetic domain on a picosecond time scale with a magnetization direction determined by the helicity of light. Depending on the light intensity and sample temperature, pulses of the same helicity can create domains with opposite magnetizations. We argue that this phenomenon relies on a twofold effect of light which (i) instantaneously excites coherent low-amplitude spin precession and (ii) triggers a spin reorientation phase transition. The former dynamically breaks the equivalence between two otherwise degenerate states with opposite magnetizations in the high-temperature phase and thus controls the route of the phase transition.

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LOW BIREFRINGENT Sm-DOPED ORTHOFERRITES

Cited by 4 publications

References 0 publications

Effect of laser pulse propagation on ultrafast magnetization dynamics in a birefringent medium

Effect of laser pulse propagation on ultrafast magnetization dynamics in a birefringent medium

Structure–Property Relationships for Weak Ferromagnetic Perovskites

New Optical Route to Magnetic State Control

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