A systematic study on crystal structure and magnetic properties of Ln3GaO6 (Ln=Nd, Sm, Eu, Gd, Tb, Dy, Ho and Er)

Liu, F.S.; Liu, Q.L.; Liang, J. K.; Lin-yuan, Yang; Song, G. B.; Luo, Jianqiao; Rao, Guanghui

doi:10.1016/j.jssc.2003.12.024

Cited by 22 publications

(13 citation statements)

References 10 publications

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“…3). The average length of the Ga-O bonds is 1.83Å, which are close to the results of Ln 3 GaO 6[15].…”

supporting

confidence: 84%

“…The interatomic distances between the Y(1) and O atoms are in the range of 2.15-2.60Å with an average of 2.36Å, and the interatomic distances between the Y(2) and O atom are in the range 2.28-2.42Å with an average of 2.34Å. Comparing with our previous investigation [15], the average distances between To examine the reliability of the determined structure, we used the bond valence model to estimate the bond valence of the ions by Brown's empirical relationship between bond valence and interatomic distance [16]. The results are listed in Table 2.…”

Section: X-ray Powder Diffractions and Structuresupporting

confidence: 67%

“…A step scan mode was employed with a step width of 2θ = 0.02 • and a sampling time of 1 s. The XRD data were analyzed by the Rietveld refinement program Fullprof 2000 (Version 2.40) [14] based on the structure model of Ln 3 GaO 6 reported in our previous works [15], pseudo-Voigt function is used as the profile function.…”

Section: Methodsmentioning

confidence: 99%

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Crystal structure and photoluminescence of Tb3+ doped Y3GaO6

Liu¹,

Liu²,

Liang³

et al. 2006

Journal of Alloys and Compounds

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“…3). The average length of the Ga-O bonds is 1.83Å, which are close to the results of Ln 3 GaO 6[15].…”

supporting

confidence: 84%

Section: X-ray Powder Diffractions and Structuresupporting

confidence: 67%

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Crystal structure and photoluminescence of Tb3+ doped Y3GaO6

Liu¹,

Liu²,

Liang³

et al. 2006

Journal of Alloys and Compounds

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“…[66,67] A comparison with data reported in the literature shows that the broad peaks at 2θ = 30.8° (004) [71] These materials adopt an orthorhombic structure with space group Cmc2 1 ( 2 12 ) and are isotypic to the corresponding rare-earth gallates, RE 3 GaO 6 (Ln = Nd-Er, Y). [72,73] Overall, the KLEtemplated YIG thin films reveal an intricate crystallization pathway which is somewhat similar to that observed for yttrium aluminum garnet, Y 3 Al 5 O 12 (YAG), showing the same intermediates. [74,75] However, the most remarkable result is, perhaps, that the nanoscale structure is only affected to a limited extent by the different solid-solid conversions, which emphasizes the robustness of the mesoporous framework.…”

Section: Figure 3 Shows Typical Saxs Patterns As a Function Of Dryingmentioning

confidence: 55%

Room Temperature Magnetic Rare-Earth Iron Garnet Thin Films with Ordered Mesoporous Structure

et al. 2013

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Amphiphilic polymers are very attractive as porogens for the preparation of ordered mesoporous thin films and powders with pore sizes ranging from 40 down to a few nanometers in diameter because they are capable of both forming different superstructures and interacting with sol-gel precursors. In the present work, we report for the first time the synthesis of a series of highly crystalline rare-earth iron garnet (RE 3 Fe 5 O 12 , RE = Y, Gd-Dy) thin films with cubic networks of interconnected pores averaging 17 nm in diameter through facile polymer templating of hydrated nitrate salts. Despite intricate crystallization pathways, e.g., Y 3 Fe 5 O 12 via Y 4 Fe 2 O 9 and h-YFeO 3 , the nanoscale architecture of all these materials is only affected to a limited extent by solid-solid conversions at elevated temperatures.We specifically focus on the characterization of the morphology, microstructure and magnetic properties of polymer-templated Y 3 Fe 5 O 12 . This novel mesoporous material is single phase after heating to 900 °C, free of major structural defects and is also well-defined on the atomic level, as evidenced by a combination of in situ and ex situ scattering/diffraction techniques, electron microscopy, Raman and X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry. The high quality of the nanocrystalline Y 3 Fe 5 O 12 thin films with overall soft magnetic-like characteristics and moderate anisotropy is further confirmed by SQUID magnetometry measurements. The magnetization behavior in the temperature range 5-380 K well describes Bloch's T 3/2 law for a 3D Heisenberg-type ferromagnet.

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“…Rare earth (Ln) ion based compounds have attracted much attention since they have large practical and potential applications in many fields, such as high-performance luminescent devices [1][2][3], magnets [4,5], catalysts [6][7][8] and so on. These characteristics are based on the electronic, optical, and chemical properties arising from their 4f electrons.…”

Section: Introductionmentioning

confidence: 99%