Effect of adding aluminum ion on the structural, optical, electrical and magnetic properties of terbium doped yttrium iron garnet nanoparticles films prepared by sol–gel method

Aldbea, Ftema W.; Ibrahim, Noor Baa`Yah; Yahya, M.

doi:10.1016/j.apsusc.2014.10.019

Cited by 51 publications

(13 citation statements)

References 26 publications

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“…However, this phase needs to be sintered at higher temperatures ($1500°C). YIG also presents higher negative value (À283.82 ppm°C À1 ) of the Resonant Frequency Temperature Coefficients (s f ) and cubic symmetry with five iron site, two octahedral and three tetrahedral [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 96%

Novel magnetic–dielectric composite ceramic obtained from Y3Fe5O12 and CaTiO3

Paiva

Silva

Ribeiro

et al. 2015

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 96%

Novel magnetic–dielectric composite ceramic obtained from Y3Fe5O12 and CaTiO3

Paiva

Silva

Ribeiro

et al. 2015

Journal of Alloys and Compounds

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“…by Ftema et al [17]. As a result of the high optical transparency, the surface reflection losses were negligible.…”

mentioning

confidence: 85%

“…The substitution of terbium ions into garnet crystal at high content is restricted due to the large ionic radius of terbium compared with yttrium ions. It is found that Tb content of less than 0.8 restrains the Y ions to occupy the octahedral sites which may lead to distortion of lattice parameter [17][18][19]. Therefore, in this study, Tb content is chosen at x=0.2.…”

Section: Introductionmentioning

confidence: 99%

Structural, Optical and Magnetic Properties of YIG Doped with Erbium and Terbium Nanofilms using Sol-Gel Method

Elhamali¹,

Ibrahim²,

Radiman³

2016

JAN

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Abstract. The combined substitution of Tb and Er ions at the yttrium site with a formula Y 3-x-y Tb x Er y Fe 5 O 12 , (x = 0.0, 0.2) and (y = 0.0, 0.2, 0.6, 1.0 and 1.4) were prepared by a sol-gel method. The crystalline structures of all films were found to have a pure single phase garnet structure. This result confirmed the successful incorporation of erbium and terbium ions into YIG structure. The lattice constant increased linearly with Er +3 concentrations from 12.379 to 12.532 Å. The morphology measurement revealed the formation of nanoparticles films. The magnetic properties characterization exhibited that all films are soft ferrimagnetic materials .The results showed the saturation magnetization Ms of pure YIG at 150 (emu / cm 3 ). The Ms value decreased to 110 emu / cm 3 at concentration of (x=0.2, y=0.0), then increased with increment of (y) content in a linear manner. The optical transparency of films was over 96 % at (y=0.6) in the wavelength range of 600 to 900 nm. At a short wavelength (λ < 400 nm), absorption coefficient α increased linearly with increment of Er 3+ ions. Because of nearly zero absorption coefficient in the NIR region, the films could be useful as optical isolator.

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“…Also mixed substitutions [22,23] can adjust the magnetic properties of YIG. The properties of YIG can also be adjusted by replacing Fe 3 þ ions in a site and d site with other magnetic ions such as Cr 3 þ [24], or non-magnetic ions such as Al 3 þ [25], and so on. The M s of YIG is relatively low among the magnetic materials.…”

Section: Introductionmentioning

confidence: 99%