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ferrofluids

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(A–D, F–H) Reflected light microscopy and (E, I, J) backscattered electron ...
Published: 26 May 2023
Figure 4. (A–D, F–H) Reflected light microscopy and (E, I, J) backscattered electron images of representative grains. Abbreviations: mt—magnetite, (Ti-)mt—titanomagnetite, hem—hematite, py—pyrite, cpy—chalcopyrite, qz—quartz, fsp—feldspar, M—melt, G—granitoid, FFO—ferrofluid. (A) Large (>200
Published: 01 January 1981
EISBN: 9781560802518
... HDR geothermal borehole would be filled with a magnetic material such as ferrofluid. When polarized by the earth's field, this material would produce a localized crack magnetic anomaly which is characteristic of the azimuth of the vertical crack with respect to magnetic north. Signatures...
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Schematic section of the cell used for saturating the reservoir samples wit...
Published: 01 January 2008
Figure 4 Schematic section of the cell used for saturating the reservoir samples with ferrofluid under 80 psi (551 kPa) pressure.
Journal Article
Journal: AAPG Bulletin
Published: 01 January 2008
AAPG Bulletin (2008) 92 (1): 31–52.
...Figure 4 Schematic section of the cell used for saturating the reservoir samples with ferrofluid under 80 psi (551 kPa) pressure. ...
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Journal Article
Published: 01 July 2001
European Journal of Mineralogy (2001) 13 (4): 659–669.
...-mail: michael@geophysik.uni-muenchen.de 15 01 2001 22 07 2000 12 12 2000 E. Schweizerbart'sche Verlagsbuchhandlung, D-70176 Stuttgart 2001 geomagnetic-field perception magneto-elastic nanocrystals magnetite ferrofluid magnetic map This paper was presented...
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(A) Natural magnetic susceptibility (NAMS) ellipsoid. The manifestation of ...
Published: 01 January 2008
diagram of a cubic rock sample with a dominant set of open, connected microfractures impregnated with ferrofluid.
Journal Article
Published: 01 December 2000
Petroleum Geoscience (2000) 6 (4): 369–379.
... employed in AMS work. In the present study, 5 mm cubic sub-samples were used. These were cut from the larger plug samples, each plug yielding eight sub-samples. The natural AMS and ferrofluid-enhanced AMS of samples from this well are quite similar ( Fig. 6A & B) and both are typical of flow...
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Series: Clay Minerals Society Workshop Lectures
Published: 01 January 2016
DOI: 10.1346/CMS-WLS-20.7
EISBN: 9781881208457
.... photocatalysis), are introduced here. Other examples refer to the in situ formation of NPs, e.g. zeolites, which become attached to the clay fiber during the synthesis process via covalent bonds. The use of ferrofluids allows the development of nanoarchitectures in which iron-oxide NPs decorate sepiolite...
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Journal Article
Published: 01 April 1977
American Mineralogist (1977) 62 (3-4): 374–376.
...R. S. Strebin; J. W. Johnson; D. M. Robertson Abstract A number of experiments were carried out with a Ferrofluid Density Separator to determine the practicality of separating micrometer-size particles into density fractions. The separators are normally used on much coarser material...
Journal Article
Journal: Clay Minerals
Published: 01 March 2002
Clay Minerals (2002) 37 (1): 135–141.
.... Aqueous-based ferrofluids define a class of water-soluble magnetic nanoparticles (including magnetite and Co ferrite) that are obtained by ionizing positively or negatively some free hydroxyl groups (-OH) found at the surfaces of the particles shortly after their precipitation. Positively charged...
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Journal Article
Journal: Geophysics
Published: 13 March 2019
Geophysics (2019) 84 (3): JM1–JM14.
... production stages. The second method is to mix ferrofluid (which consists mainly of hematite or magnetite) with the fracturing fluid to form a magnetic fluid system and to inject this mixture into the fracture ( Borglin et al., 1998 ; Ameen, 2012 ; Sengupta, 2012 ; Liu et al., 2013b ; Ersoz, 2014...
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Journal Article
Published: 01 August 2009
American Mineralogist (2009) 94 (8-9): 1120–1129.
...- and micrometer-scale magnetic particles are suspended in carrier fluids to create ferrofluids and magnetorheological fluids, which are frequently used as lubricants, dampening agents, heat conductors, optical refractometers, and medical delivery tools. It is possible to regulate the viscosity of these magnetic...
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Journal Article
Published: 01 January 2001
Reviews in Mineralogy and Geochemistry (2001) 44 (1): 217–292.
... colloids and ferrofluids for seals, bearings, and dampers, such as the ones in our cars ( Rosensweig 1985 , Cabuil 2000 , Popplewell and Sakhnini 1995 ), to magneto-optic recording devices ( Suzuki 1996 ), to magnetic force microscopy (MFM) tips ( Liou et al. 1997 , Hopkins et al. 1996 ), to giant...
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Journal Article
Journal: GSA Bulletin
Published: 26 May 2023
GSA Bulletin (2024) 136 (1-2): 307–328.
...Figure 4. (A–D, F–H) Reflected light microscopy and (E, I, J) backscattered electron images of representative grains. Abbreviations: mt—magnetite, (Ti-)mt—titanomagnetite, hem—hematite, py—pyrite, cpy—chalcopyrite, qz—quartz, fsp—feldspar, M—melt, G—granitoid, FFO—ferrofluid. (A) Large (>200...
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Journal Article
Published: 01 April 2009
European Journal of Mineralogy (2009) 21 (2): 293–302.
... & Gupta, 2005 ; An et al. , 2006 ). Technical applications include the use of magnetite in films, magnetic recording media and in the form of ferrofluids as magnetic inks ( Zahn, 2001 ). Each application requires specific material properties. The size and the shape of the magnetite nanocrystals...
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Journal Article
Published: 01 November 2011
Geochemistry: Exploration, Environment, Analysis (2011) 11 (4): 265–278.
... ilmenite, chromite and other moderately paramagnetic minerals such as almandine ( Baumgartner 2006 ). The magstream separator is a rotation-based separation system that is dependent on specific gravity as well as magnetism. The concentrate to be separated is combined with a ferrofluid and passed downward...
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Journal Article
Journal: Clay Minerals
Published: 27 February 2023
Clay Minerals (2023) 58 (1): 19–25.
.... , Wicklein B. , Darder M. & Ruiz-Hitzky E. ( 2011 ) Multifunctional porous materials through ferrofluids . Advanced Materials , 23 , 5224 – 5228...
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Journal Article
Published: 01 July 2010
American Mineralogist (2010) 95 (7): 1017–1026.
.... Magnetite (Fe 3 O 4 ) is an important mineral to several fields of study. It has widespread uses in industrial processes as a ferrofluid, including digital media recording and drug delivery ( Pankhurst et al. 2003 ; Raj and Moskowitz 1990 ). Magnetite is of great interest to physicists, as it has unique...
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Journal Article
Published: 01 April 2014
Russ. Geol. Geophys. (2014) 55 (4): 508–514.
.... (Ed.), 1980 . The Geophysics of the Elura Orebody . Austral. Soc. Expl. Geophys. , Sydney . Fannin , P.C. , Charles , S.W. , 1995 . On the influence of distribution functions on the after-effect function of ferrofluids . J. Phys. D. Appl. Phys...
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Journal Article
Published: 01 January 2012
American Mineralogist (2012) 97 (1): 128–133.
.... Richter U. Kaiser W. ( 1999 ) Application of magnetite ferrofluids for hyperthermia . Journal of Magnetism and Magnetic Materials , 201 , 420 – 422 . Kakol Z. Honig J.M. ( 1989 ) The variation of verwey transition temperature with oxygen stoichiometry in magnetite . Solid...
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