Sol–gel thin film deposition and characterization of a new optically active compound: Er2Ti2O7

Langlet, M.; Coutier, C.; Fick, Jochen; Audier, M.; Meffre, W.; Jacquier, B.; Rimet, R.

doi:10.1016/s0925-3467(01)00007-6

Cited by 50 publications

(30 citation statements)

References 20 publications

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“…In evaluation of stimulated emission cross-section with expression (12) the calculated lifetime of 4 F 3/2 state (271 ls) and branching ratios calculated by J-O method (see Table 4) has been used. The values obtained are in good agreement to those obtained from expression (11). However, if experimental branching ratios are used in calculation of the stimulated emission cross-section by Fü chtbauer-Ladenburg method a large difference with values calculated using branching ratios evaluated by J-O method is observed.…”

Section: Resultssupporting

confidence: 80%

“…But in rare-earth doped glasses where bands are inhomogeneously broadened the line width at half the intensity is usually taken as the effective band width. Alternately, the stimulated peak emission cross-section (r em (k p )) for a transition can be evaluated from Fü chtbauer-Ladenburg method [41] and may be used to verify results obtained using expression (11).…”

Section: Resultsmentioning

confidence: 99%

“…With progress of hydrolysis, in 2-3 days (48-72 h), the gel densified to form glass. Several authors processed the gel at around 1000°C [7,10,11] during solidification. In this preparation the sample was treated at 500°C for 2 h after it solidified for reduction of hydroxyl content and further densification, prior to recording of luminescence spectra.…”

Section: Glass Preparationmentioning

confidence: 99%

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Characteristics of Nd3+ ions in sol–gel derived silicate glass in presence of Al(NO3)3 and the 4F3/2→4I11/2 transition

Hazarika¹,

Rai

2007

Optical Materials

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Glass Preparationmentioning

confidence: 99%

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Characteristics of Nd3+ ions in sol–gel derived silicate glass in presence of Al(NO3)3 and the 4F3/2→4I11/2 transition

Hazarika¹,

Rai

2007

Optical Materials

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“…The respective concentrations of Ce and Ti were both of 0.15 mol/L. [61] After that, the mixture was refluxed at 70 ºC during 24 hours under a nitrogen atmosphere in order to preserve the solution from the atmosphere humidity. The resulting orange sol led to a transparent gel after evaporation of solvent, which became a powder after drying in IR lamps.…”

Section: Methodsmentioning

confidence: 99%

Sol–Gel Synthesis of Tunable Cerium Titanate Materials

et al. 2008

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Cerium titanate structures present a high technological interest because of their optical and catalytic properties. This work reports the synthesis of these materials by a sol–gel methodology that allows mixed oxides with TiIV/CeIII, TiIV/CeIV or TiIV/CeIII–CeIV species to be obtained. Crystallization of CeO2–TiO2 mixed oxides and Ce2Ti2O7 pyrochlore phase was corroborated by XRD and Raman spectroscopy. Magnetic and EPR measurements were performed in order to clarify the oxidation state of the cerium ions in the system as a result of the easy oxidation of CeIII. The firing atmosphere is crucial for the CeIII/CeIV ratio, which is responsible for the different structure, but it also affects the colouration (yellow, green, brown). This methodology offers the possibility to modulate the Ce3+/Ce4+ content and particle sizes providing more ecological coloured pigments based on rare earth elements that could be interesting materials for advanced applications in catalysis.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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“…The pyrochlore oxides are the subject of intense research efforts because of a variety of interesting electrical [1], magnetic frustrated [2,3] and optical properties [4][5][6] and, therefore, potential applications in many areas of technology. Especially, the properties of frustrated magnetic fully cornersharing tetrahedral lattice [7] (the pyrochlore lattice) are attracting much attention of many researchers [8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Magnetic Properties, Magnetic Entropy and Arrot Plot of Antiferromagnetic Frustrated Er2Ti2O7 Compound

Amor

Bejar

Hussein

et al. 2011

J Supercond Nov Magn

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The pyrochlore Er 3+ 2 Ti 4+ 2 O 2− 7 was synthesized via a ceramic method using two different oxides (Er 2 O 3 and TiO 2 ). The compound was found to crystallize in the cubic system with the Fd3m space group (No. 227). A magnetic study, carried out at 2 and 300 K under an applied magnetic field μ 0 H = 0.05 T, has revealed a complex magnetic structure at low temperature. The effective paramagnetic moment μ exp eff , deduced from (χ − χ 0 ) −1 = f (T ) curve, was found by assuming a zero moment on the transition metal atom Ti 4+ . The paramagnetic Curie-Weiss temperature θ CW = −21.54 K, the nearest neighbor interaction J nn = −2.30 K, the classical nearest neighbor J cl = −8.65 K and the dipolar D nn = 3.76 K interactions' values have revealed an antiferromagnetic behavior for Er 2 Ti 2 O 7 compound at low temperature. We have also studied the effects of the magnetic field splitting of rare-earth atom Er 3+ in the compound Er 2 Ti 2 O 7 curved Arrott plots.

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Sol–gel thin film deposition and characterization of a new optically active compound: Er2Ti2O7

Cited by 50 publications

References 20 publications

Characteristics of Nd3+ ions in sol–gel derived silicate glass in presence of Al(NO3)3 and the 4F3/2→4I11/2 transition

Characteristics of Nd3+ ions in sol–gel derived silicate glass in presence of Al(NO3)3 and the 4F3/2→4I11/2 transition

Sol–Gel Synthesis of Tunable Cerium Titanate Materials

Synthesis, Magnetic Properties, Magnetic Entropy and Arrot Plot of Antiferromagnetic Frustrated Er2Ti2O7 Compound

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