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Баран, М.; Gnatchenko, S. L.; Gorbenko, O. Yu.; Kaul, A. R.; Szymcżak, R.; Szymczak, H.

doi:10.1103/physrevb.60.9244

Cited by 37 publications

(23 citation statements)

References 9 publications

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“…For investigating these two phenomena, a variety of methods have been adopted [7][8][9][10]. Photomagnetic effects are relatively unknown [11][12][13][14]. In fact, photomagnetism has been extensively studied in molecular complexes [15].…”

Section: Introductionmentioning

confidence: 99%

“…Of late, very interesting reports on photo-induced changes have appeared for several magnetic oxide systems [16][17][18]. Amongst these, the most investigated recently are the perovskite oxides such as manganites of the type La 0.9 Ca 0.1 MnO 3 [12] and Pr 0.6 La 0.1 Ca 0.3 MnO 3 [13] or chromites, La 0.5 Pr 0.5 CrO 3 [17]. While for the hole doped manganites, most of the discussions are focussed on electronic phase separation of antiferromagnetic (AFM) and ferromagnetic (FM) phases and subsequent photo-induced growth of ferromagnetic phase, in cobaltates, on the other hand, these have been dealt with in terms of spin transitions also [2,11].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic and photomagnetic studies in Nd0.7Sr0.3CoO3

Bahadur¹,

Asthana²,

Carbonera³

et al. 2007

Solid State Communications

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic and photomagnetic studies in Nd0.7Sr0.3CoO3

Bahadur¹,

Asthana²,

Carbonera³

et al. 2007

Solid State Communications

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“…Manganites have also been shown to be very sensitive to various external stimuli such as visible light [2][3][4], x-rays [5], and magnetic fields. For instance, ultra-short pulses of light perturb the magnetic state on short timescales [3,4] while exposure to CW laser light can alter the magnetic state on minute and hour timescales [2].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, ultra-short pulses of light perturb the magnetic state on short timescales [3,4] while exposure to CW laser light can alter the magnetic state on minute and hour timescales [2]. The charge state is also perturbed by exposure to ultrafast pulses [6] and x-rays [5], where it is thought that a charge ordered state is destroyed upon illumination.…”

Section: Introductionmentioning

confidence: 99%

Nuclear spin relaxation of 8Li in a thin film of La0.67Ca0.33MnO3

Miller

Arseneau

Chow

et al. 2006

Physica B: Condensed Matter

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We report β-NMR measurements of the nuclear spin relaxation rate (1/T1) in a thin film of La0.67Ca0.33MnO3 (LCMO) using a low energy beam of spin polarized 8 Li. In a small magnetic field of 150 G there is broad peak in 1/T1 near the Curie temperature (Tc = 259 K) and a dramatic decrease in 1/T1 at lower temperatures. This is attributed to a critical slowing down of the spin fluctuations near Tc and freezing of the magnetic excitations at low temperatures, respectively. In addition there is a small amplitude, slow relaxing component at high temperatures which we attribute to 8 Li in the STO substrate. There is indication that the spin relaxation rate in the substrate is also peaked at Tc due to close proximity to the magnetic film. These results establish that low energy β-NMR can be used as a probe of magnetic fluctuations in magnetic thin films over a wide range of temperatures.

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“…14,15 In addition, a photoinduced magnetization change has been observed in several charge ordered manganites. 16,17 We think that a photoinduced breakdown of CO also happens in YbFe 2 O 4 . In fact, the (partial) melting of CO by laser illumination in RFe 2 O 4 can be supported by the photocurrent effect.…”

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confidence: 99%

Photoinduced Magnetization Change in Multiferroic YbFe ₂ O ₄

Liu

Wang

et al. 2009

Chinese Phys. Lett.

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We have studied the influence of laser illumination on the magnetization in multiferroic YbFe 2 O 4 single crystals. A photoinduced magnetization change has been confirmed in both ab plane and c axis direction. The temperature dependence of the photoinduced magnetization reduction excludes laser heating as the cause. In terms of the breakdown of charge order driven by laser illumination, the photoinduced magnetization change provides a strong evidence for the spin-charge coupling in YbFe 2 O 4 . This photomagnetic effect based on charge-order-induced multiferroicity could be used for non-thermal optical control of magnetization.Recently there has been growing interest in the field of multiferroics and magnetoelectric effects due to its great potential for applications as well as the significance for fundamental physics. 1,2 The mixed-valence compounds RFe 2 O 4 (R= Ho, Er, Tm, Yb, Lu and Y) represent a peculiar class of multiferroic materials in which the multiferroicity is induced by charge order (CO). 3 The system involves a double layer structure with a triangular iron lattice. The coulombic interactions between Fe 2+ and Fe 3+ ions compete with the frustrated nature of the triangular lattice, which leads to a peculiar ordered arrangement of charges. For instance, a three-dimensional (3D) CO occurs below 330 K in LuFe 2 O 4 , 4,5 which results in a net electrical polarization. This type of ferroelectricity associated with CO is termed as "electronic ferroelectricity", 6 in contrast to conventional ferroelectricity involving displacement of cation and anion pairs. Meanwhile, the strong magnetic interactions between Fe moments develop as a ferrimagnetic ordering below a temperature around 240 K. 7 Therefore, the coexistence of electronic ferroelectricity and ferrimagnetism makes RFe 2 O 4 a new class of multiferroic materials.Although the CO induced multiferroicity in RFe 2 O 4 has been well identified by many experiments, the coupling between electronic and magnetic degree of freedom in the system has not been directly observed. Previous studies have shown some signs of a magnetoelectric (ME) coupling in LuFe 2 O 4 , such as the sharp change of electrical polarization at the ferrimagnetic transition temperature T N , 6 and the X-ray scattering study. 8 Nevertheless, the ME coupling in multiferroic RFe 2 O 4 requires more convincing evidences.It has been well known that the CO in many systems can be manipulated by external stimulus. 9,10 Our recent work suggests that the CO in RFe 2 O 4 is very sensitive to external electric fields and the breakdown of CO by applied electric fields leads to an insulator to metal transition 11 1

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Light-induced antiferromagnetic-ferromagnetic phase transition inPr0.6La0.1Ca

Cited by 37 publications

References 9 publications

Magnetic and photomagnetic studies in Nd0.7Sr0.3CoO3

Magnetic and photomagnetic studies in Nd0.7Sr0.3CoO3

Nuclear spin relaxation of 8Li in a thin film of La0.67Ca0.33MnO3

Photoinduced Magnetization Change in Multiferroic YbFe ₂ O ₄

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Light-induced antiferromagnetic-ferromagnetic phase transition inPr0.6La0.1Ca

Cited by 37 publications

References 9 publications

Magnetic and photomagnetic studies in Nd0.7Sr0.3CoO3

Magnetic and photomagnetic studies in Nd0.7Sr0.3CoO3

Nuclear spin relaxation of 8Li in a thin film of La0.67Ca0.33MnO3

Photoinduced Magnetization Change in Multiferroic YbFe 2 O 4

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Product

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Photoinduced Magnetization Change in Multiferroic YbFe ₂ O ₄