SrWO4:Nd3+ – new material for multifunctional lasers

Ivleva, L. I.; Basiev, Tasoltan T.; Voronina, I.S.; Zverev, Petr G.; Осико, В. В.; Polozkov, N. M.

doi:10.1016/s0925-3467(02)00335-x

Cited by 99 publications

(45 citation statements)

References 8 publications

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“…Strontium tungstate is also a very important member of the scheelite family. It is an efficient scintillator at low temperatures, and has gained a lot of interest due to the possibility of combining laser and Raman properties in the same media [9]. Both pure and rare earth doped SrWO 4 are used as Raman converters, amplifiers and lasers [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Crystallization and optical properties of CaWO4 and SrWO4

Arora¹,

Chudasama

2006

Cryst. Res. Technol.

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Single crystals of calcium tungstate and strontium tungstate have been grown by double decomposition flux reaction technique using lithium chloride as flux. Growth conditions are optimized to synthesize well faceted crystals. Effect of primary and secondary flux density in the growth charge has been studied. Thermogravimetric study reveals that the grown crystals are highly stable in the temperature range 25 -1000°C. Analysis of optical absorption normal to the ab-plane in the spectral range of 200 -800 nm reveals the true absorption edge, the nature of transition being the allowed indirect one at 4.60 eV and 4.56 eV respectively for CaWO 4 and SrWO 4 . The crystals have been characterized by determining useful pertinent optical and dielectric parameters.

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Section: Introductionmentioning

confidence: 99%

Crystallization and optical properties of CaWO4 and SrWO4

Arora¹,

Chudasama

2006

Cryst. Res. Technol.

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“…Further it is highly crucial to differentiate the source of ferromagnetism in non-magnetic compounds is either an intrinsic effect or by the dopants [11]. Alkaline earth metal tungstates (AWO 4 where A = Ca, Sr, Ba and Pb) with scheelite structure is a class of material has been widely used for scintillating materials, humidity sensors, light emitting diodes (LEDs), solid state Raman lasers, optical fibers and catalysts [12][13][14][15][16][17]. Among various AWO 4 materials, strontium tungstate (SrWO 4 ) has attracted a great deal of attention in recent years because of their excellent physical properties [18].…”

Section: Introductionmentioning

confidence: 99%

Band gap tailoring and enhanced ferromagnetism in Yb doped SrWo4 scheelite structured system

Muralidharan

Anbarasu

Perumal

et al. 2015

J Mater Sci: Mater Electron

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Room temperature ferromagnetism and enhanced optical property of Yb doped SrWO 4 compounds have been investigated for the importance in the field of spintronics. Pristine and Yb doped SrWO 4 compounds were synthesized by simple chemical precipitation method. Powder X-ray diffraction analysis reveals the scheelite type tetragonal structure of all the prepared compounds. The crystallite size and lattice strain was calculated by Williamson-Hall plot. The local structural disorder of the compounds was investigated by Laser Raman spectroscopy and it was found that the local disorder induced by the dopant leads to alteration in Raman active modes of Yb doped SrWO 4 compounds. The formation of microsphere and platelets like shapes of particulate system was examined by electron microscopy techniques. The evidences for oxygen vacancy and oxidation states of elements present in the compounds were analyzed by X-ray photoemission spectroscopy. In UV-Vis spectra, distinctive shift of absorption edge was observed exclusively for all the Yb doped SrWO 4 compounds. The presence of defective states with prominent blue and green emission of the compounds was investigated by photoluminescence spectroscopy. Magnetization study reveals that the pristine SrWO 4 compound exhibits unsaturated ferromagnetic behaviour, whereas all the Yb doped SrWO 4 compounds demonstrates saturated ferromagnetic behaviour. The enhancement of magnetization and ferromagnetic ordering of the compounds has been explained in terms of carrier-induced Ruderman-Kittel-KasuyaYosida interaction theory. Hence, from the present investigation it was observed that the doping of Yb in SrWO 4 will yields a new kind of multifunctional material for fabricating magneto-optical and electronic devices.

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“…The wide band gap semiconducting materials such as divalent metal tungstates (AWO 4 , where A = Ca, Sr, B and Pb) have been denoted as an important class of electrooptic materials, due to their peculiar physical properties and found used in the field of display devices, scintillating materials, humidity sensors, light emitting diodes (LEDs), solid state Raman lasers, optical fibers and catalysts [17][18][19][20][21][22][23]. Among various AWO 4 materials, Strontium Tungstate (SrWO 4 ) has attracted a great deal of attention in recent years because of their intriguing luminescence and structural properties [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…SrWO [17,18,27]. Due to their featured crystal structure, rare earth doped SrWO 4 materials have been proposed as a potential candidate for various electro-optical and scintillating device applications [18][19][20][21][22][23][24][25][26][27]. From earlier reports, it was found that the doping of Nd 3?…”

Section: Introductionmentioning

confidence: 99%

Studies on multifunctional behaviour of Cr doped SrWO4 Compounds

Muralidharan

Anbarasu

Perumal

et al. 2015

J Mater Sci: Mater Electron

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Transition metal doped divalent tungstate compounds endowed with coalescence of optical and magnetic property forms a class of multifunctional materials and found importance in the field of magneto-optical and spintronics device applications. In the present work, pure and Cr doped SrWO 4 compounds were synthesized by chemical precipitation method. Powder X-ray diffraction analysis reveals scheelite type tetragonal structure of all the compounds. The effect of doping on crystal symmetry and local structure of the compounds was investigated by Laser Raman spectroscopy studies. The micro sphere and polydispersed surface morphology of all the compounds were examined by scanning electron microscopy and transmission electron microscopy analysis. Further, the evidences for oxygen vacancy and oxidation states of elements present in the compounds were analyzed by X-ray photoelectron spectroscopy. The optical absorption spectra explicitly describe the distinctive shift in absorption edge and linear decrease in band gap values while increasing Cr concentrations in SrWO 4 system. The presence of defective states and oxygen vacancy in Cr doped SrWO 4 compounds were confirmed with multicolor PL emission spectra. Electron paramagnetic resonance spectra authenticates the inducement of paramagnetic center (Cr 3? ) on increasing the dopant concentration. The magnetization analysis demonstrates enhanced ferromagnetic behaviour of all the Cr doped compounds, whereas the pure SrWO 4 compound exhibits frustrated ferromagnetic behaviour. The augmented ferromagnetic ordering in Cr doped compounds has been explained in terms of carrier-induced RudermanKittel-Kasuya-Yosida interaction theory. The possible inducement of carrier mediated room temperature ferromagnetism in Cr doped SrWO 4 explicit demonstrates a hopeful candidature for magneto-optical and spintronic device applications.

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SrWO4:Nd3+ – new material for multifunctional lasers

Cited by 99 publications

References 8 publications

Crystallization and optical properties of CaWO4 and SrWO4

Crystallization and optical properties of CaWO4 and SrWO4

Band gap tailoring and enhanced ferromagnetism in Yb doped SrWo4 scheelite structured system

Studies on multifunctional behaviour of Cr doped SrWO4 Compounds

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