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Showing 1 to 20 of 60 for “"Garnets"”.
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Trace element zoning in garnets--implications for metamorphic petrogenesis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1988.
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Magnetic and Spintronic Properties of Rare-Earth Iron Garnets
Rare earth iron garnets (REIG) can be grown as thin films with strain-induced perpendicular magnetic anisotropy (PMA), and their potential for spintronic device applications has been studied extensively in recent years. In particular, thulium iron garnet (TmIG) has excited great interest due to …
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The magneto-optic spectra of bismuth-substituted iron garnets
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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Mössbauer spectroscopy and crystal chemistry of natural Fe-Ti garnets.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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The electrical and optical properties of doped yttrium aluminum garnets
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Time-resolved and spectroscopic studies on phononic switching of magnetisation in iron garnets
Contains fulltext : 311640.pdf (Publisher’s version ) (Open Access)
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Studies on Chemical and Electrochemical Stability of Li-stuffed Garnets for Next Generation Lithium Batteries
… Among the solid Li-ion electrolytes, Li-stuffed garnets are deemed a very promising electrolyte due to their wide electrochemical window (> 6 V vs. Li/Li+), chemical stability against metallic Li, and high ionic conductivity (~ 1 mS cm-1) at room temperature. Even with these attributes, there is …
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A Study of Compositional Zoning in Garnets From the Ducktown Mining District, Tennessee: Implications for Mathematical Modelling of Garnet Growth
Garnets from the Ducktown mining district were examined for compositional zoning. Unzoned garnets are common in the sphalerite rich areas--the garnets are 50% spessartine--and in the calc-silicate nodules--the garnets show extreme sieve texture. Normal (convex manganese profile) zoning is prevalent …
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Innovative numerical petrological methods for definition of metamorphic timescale events of southern European Variscan relicts via thermodynamic and diffusion modelling of zoned garnets
In questo lavoro sono stati sviluppati e applicati a due casi studio dei metodi innovativi di petrologia numerica, utilizzando diversi linguaggi informatici di programmazione (Model Builder; Python; Matlab), con l intento di studiare le proprietà chimico-fisiche delle rocce metamorfiche alla …
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Domain Wall Based Magnonics in Iron Garnet
… and processing speed, materials like iron garnets, ferrimagnetic insulators with tunable magnetic properties, are essential. Key magnetic parameters, including saturation magnetization, perpendicular magnetic anisotropy, coercivity, and Gilbert damping, can be tailored through elemental …
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Growth and Characterization of Polycrystalline Rare-Earth Iron Garnet Films and Heterostructures
… devices. Thin films of rare-earth iron garnets, a class of insulating ferrimagnetic oxides, are particularly well suited to this application as the anisotropy, magnetization, magnetostriction, and damping can be easily controlled through selection of rare-earth ion and substrate. …
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DEVELOPMENT OF MAGNETO-OPTIC SENSORS WITH GALLIUM IN BISMUTH DOPED RARE-EARTH IRON-GARNET THICK FILMS
… Faraday effect of bismuth-doped rare-earth iron-garnets with varying doping levels of gallium from z = 1.0 to 1.35. We used lutetium to control the film's in-plane magnetic properties and found that gallium doping levels above the compensation point caused a loss of anisotropy control, a canted …
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Garnet-biotite thermometry, garnet-aluminum silicate-silica-plagioclase barometry, and Emp monazite geochronology of the early Proterozoic Ivanpah Mountains, eastern Mojave Desert, Se California
… from six monazite grains included in three large garnets (2250--5000um). Matrix monazite from granitic rocks indicate magmatism may have occurred between 1559 +/- 31 Ma and 1416 +/- 28 Ma. Large garnets effectively shield monazite from Pb-loss when temperature is exceeded above what is considered …
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A comparison of the Nickel and the conventional geothermometers with respect to the Jagersfontein and the Matsoku kimberlite peridotite xenolits
… of trace levels of Ni abundances in garnets may affect the accuracy of the Ni geothermometer. A 'reliable' Ni in garnet dataset was, therefore, required to minimise errors associated with Ni compositions used in temperature determination by Ni geothermometry. Thus, Ni compositions of …
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Excess Volume and Exsolution in Pyrope-Grossular Garnet
… half as big as 𝑊_𝘝𝘗𝘺𝘳𝘰𝘱𝘦 = 4.3±0.1 cm³/mol. Garnets synthesized in diamond anvil cells (DAC) with wider XRD peaks than those synthesized in MA have more nearly symmetrical excess volumes about 3 times larger than those previous piston cylinder syntheses. The large size difference between …
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Pulsed Laser Deposited Iron Garnet Thin Films for Spintronics
… of cations in various sublattices of iron garnets enables tuning of their saturation magnetization, magnetocrystalline anisotropy, Gilbert damping and magnetostriction. Superlattices of garnets provide an opportunity to explore interfacial phenomena. We first study spin transport in …
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A detailed investigation into diamond-bearing xenoliths from Newlands Kimberlite, South Africa
… graphite) ± chromite and altered silicates. The garnets are predominantly high-Cr(> 8 wt¾), Ti-depleted, and extremely sub-calcic {< 3 wt¾). However, three specimens have high-Cr calcic compositions. The chromites are Cr-rich, Ti-depleted, whilst the solitary olivine is Fo 93 .4. The sub-calcic …
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Eu3+ pakeistų Y3Ga5O12 granatų sintezė ir liuminescencinių savybių tyrimas /
… considerably. Yttrium gallium Y3Ga5O12 (YGG) garnets are widely used as the core host materials for luminescence. The effect of the europium content on the luminescence properties is discussed in the present work. The series of powder samples were synthesized by citric sol—gel processing …
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Anorthositic sills of the southern Adirondack Mountains of New York state
… coronas on some of the garnets is dependent on the iron contents of the garnets.
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A chemical study of the silicate minerals of the Great Gossen Lead and surrounding rocks in southwestern Virginia
… show a significant increase in magnesium; garnets show a similar increase in manganese. The cores of garnets from the ore zone show the influence of the ore even at the earliest stages of garnet growth, indicating that the ore was present prior to the peak of metamorphism. The distribution …
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