High-temperature photomagnetism in Co-doped yttrium iron garnet films

Chizhik, A.; Давиденко, И. И.; Maziewski, A.; Stupakiewicz, A.

doi:10.1103/physrevb.57.14366

Cited by 46 publications

(50 citation statements)

References 15 publications

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“…Photomagnetic effects are known to exist in garnets [19][20][21][22], but have not previously been observed on this time scale. Changes in magnetocrystalline anisotropy are caused by optically induced electron transfer between ions on nonequivalent sites in the crystal.…”

mentioning

confidence: 99%

Femtosecond Photomagnetic Switching of Spins in Ferrimagnetic Garnet Films

et al. 2005

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We demonstrate that intense laser pulses can be used to directly control the spins in ferrimagnetic garnet films. Through an ultrafast and nonthermal photomagnetic effect the magnetocrystalline anisotropy is modified to create a new long-lived equilibrium orientation for the magnetization. Simultaneously, the magnetization is rotated into this new state by precession in a strong transient optically generated magnetic field. All take place within the 100 fs duration of a single laser pulse, thus demonstrating the feasibility of photomagnetic switching on the femtosecond time scale.

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confidence: 99%

Femtosecond Photomagnetic Switching of Spins in Ferrimagnetic Garnet Films

et al. 2005

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“…Photomagnetic effects are known to exist in garnets containing certain dopants, 94,95 in particular Si and Co. 47,48 Optically induced electron transfer between ions on nonequivalent sites in the crystal is believed to cause a change in the magnetocrystalline anisotropy due to a redistribution of ions. 96 This effect is strong in crystals doped with elements that can assume different valence states, and where their contribution to the anisotropy is different.…”

Section: Microscopic Justificationmentioning

confidence: 99%

“…45 Additionally, static control of the magnetic anisotropy by light has been known for some time in this class of materials. 47,48 For these reasons they seem to be ideal materials for the study of ultrafast spin dynamics in general and the search for nonthermal mechanisms for the optical control of magnetization in particular. [49][50][51] Another interesting group of dielectrics, the rare-earth orthoferrites RFeO 3 , are also a well-studied family of magnetic materials with a rich array of magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast all-optical control of the magnetization in magnetic dielectrics

Kirilyuk

Kimel

Hansteen

et al. 2006

Low Temperature Physics

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The purpose of this review is to summarize the recent progress on laser-induced magnetization dynamics in magnetic dielectrics. Due to the slow phonon-magnon interaction in these materials, direct thermal effects of the laser excitation can only be seen on the time scale of almost a nanosecond and thus are clearly distinguished from the ultrafast nonthermal effects. However, laser pulses are shown to indirectly modify the magnetic anisotropy in rare-earth orthoferrites via the crystal field, and to bring about spin reorientation within a few picoseconds. More interesting, however, are the direct nonthermal effects of light on spin systems. We demonstrate coherent optical control of the magnetization in ferrimagnetic garnet films on a femtosecond time scale through a combination of two different ultrafast and nonthermal photomagnetic effects and by employing multiple pump pulses. Linearly polarized laser pulses are shown to create a long-lived modification of the magnetocrystalline anisotropy via optically induced electron transfer between nonequivalent ion sites. In addition, circularly polarized pulses are shown to act as strong transient magnetic field pulses originating from the nonabsorptive inverse Faraday effect. An alloptical scheme of excitation and detection of different antiferromagnetic resonance modes with frequencies of up to 500 GHz will be discussed as well. The reported effects open new and exciting possibilities for ultrafast manipulation of spins by light and provide new insight into the physics of magnetism on ultrafast time scales.

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“…These substances are important as sensitive photomagnetic materials. Illumination of doped YIG films by visible or near-IR light often results in changes of their magnetic and nonmagnetic properties [3][4][5][6][7][8]. The appearance of light-induced anisotropic properties of the films is caused by the creation of highly anisotropic photosensitive centers when certain ions with valences different from the host ions are implanted in the YIG crystal lattice [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Yttrium iron garnets Y 3 Fe 5 O 12 (YIG) doped with Co ions are interesting and promising objects for investigations and applications [1][2][3][4][5][6]. Substitution of the isotropic Fe 3+ ions, which have zero orbital moment, by strongly anisotropic Co ions results in noticeable changes of the magnetic properties of the material, including the magnetic anisotropy, magnetostriction, and the temperature behavior of the magnetization [1,2].…”

Section: Introductionmentioning

confidence: 99%

Photoinduced magnetic linear dichroism in a YIG:Co film

Miloslavska

Kharchenko

et al. 2002

Low Temperature Physics

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lo s la vs ka O . V ., K ha r ch en ko Y u. N . , Kh ar c he nko N . F ., Y u r ko V. G . , Stu pa kie w ic z A ., a nd Ma zi ew s ki A . Pho to in du ce d m ag n et ic l in ea r d ic hr o is m in a Y IG : CO fi lm Mi lo s la vs ka O . V ., K ha r ch en ko Y u. N . , Kh ar c he nko N . F ., Y u r ko V. G . , Stu pa kie w ic z A ., a nd Ma zi ew s ki A . Pho to in du ce d m ag n et ic l in ea r d ic hr o is m in a Y IG : CO fi lm The spectra of linear dichroism induced by magnetic field are observed in a cobalt-doped yttrium iron garnet (YIG:Co) film grown in the (001)

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High-temperature photomagnetism in Co-doped yttrium iron garnet films

Cited by 46 publications

References 15 publications

Femtosecond Photomagnetic Switching of Spins in Ferrimagnetic Garnet Films

Femtosecond Photomagnetic Switching of Spins in Ferrimagnetic Garnet Films

Ultrafast all-optical control of the magnetization in magnetic dielectrics

Photoinduced magnetic linear dichroism in a YIG:Co film

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