Results 71 to 80 of about 35,935 (220)

Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension

The Scientific World Journal, 2014
Maghemite (γ-Fe2O3) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent.
Irwan Nurdin, Mohd Rafie Johan, Iskandar Idris Yaacob, Bee Chin Ang   +3 more
doaj   +1 more source

Finite-size versus Surface effects in nanoparticles

, 1999
We study the finite-size and surface effects on the thermal and spatial behaviors of the magnetisation of a small magnetic particle. We consider two systems: 1) A box-shaped isotropic particle of simple cubic structure with either periodic or free ...
Aharoni, Akhiezer, D.A. Garanin, Dimitrov, Dimitrov, E. Tronc, Eriksson, Garanin, Garanin, Garanin, H. Kachkachi, Kachkachi, Kodama, M. Noguès, Wildpaner   +14 more
core   +1 more source

An Enigmatic Funnel Find of the Somogyvár-Vinkovci Culture from Balatonőszöd-Temetői dűlő in Transdanubia, Hungary [PDF]

, 2013
A small section of an Early Bronze Age settlement made up of pits was uncovered at the prehistoric, multi-period site of Balatonőszöd-Temetői dűlő.
Gherdán, Katalin, Horváth, Tünde, Kulcsár, Gabriella, Sipos, György, Tóth, Mária   +4 more
core   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

Protective Effect of Polyoxometalates in {Mo132}/Maghemite Binary Superlattices Under Annealing

Frontiers in Chemistry, 2019
The binary assembly DDA-{Mo132}/OA-γ-Fe2O3 (DDA = didodecyldimethylammonium, {Mo132} = [Mo132O372(CH3COO)30(H2O)72]42−, OA = oleic acid) constitutes one of the two examples in the literature of binary superlattices made of a mixing of nanocrystals and ...
Romain Breitwieser, Romain Breitwieser, Adrien Garnier, Adrien Garnier, Thomas Auvray, Thomas Auvray, Anh-Tu Ngo, Benoit Baptiste, Nicolas Menguy, Anna Proust, Christophe Petit, Florence Volatron, Caroline Salzemann   +12 more
doaj   +1 more source

Maghemite Intercalated Montmorillonite as New Nanofillers for Photopolymers [PDF]

Nanomaterials, 2012
In this work, maghemite intercalated montmorillonite (γFe2O3-MMT)/polymer nanocomposites loaded with 1 or 2 wt.% of nanofillers were obtained by photopolymerization of difunctional acrylate monomers. The γFe2O3-MMT nanofillers were prepared by a new method based on the in situ formation of maghemite in the interlayer space of Fe-MMT using a three step ...
Tarablsi, Bassam, Delaite, Christelle, Brendle, Jocelyne, Croutxe-Barghorn, Celine   +3 more
openaire   +4 more sources

Temperature‐Driven Silicate Weathering Feedbacks Terminated the Middle Eocene Climatic Optimum

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Continental hydroclimate dynamics and its responses during the Middle Eocene Climatic Optimum (MECO, ∼40 Ma) remain largely unexplored. Here, we present high‐resolution multi‐proxy records from four East Asian lake basins that demonstrate precipitation, chemical weathering, and terrestrial input underwent multi‐phase changes during the MECO ...
Yiquan Ma, Majie Fan, Philip A. E. Pogge von Strandmann, Christian Zeeden, Yangbo Lu, Yongchao Lu, Fang Hao   +6 more
wiley   +1 more source

DNA‐Iron Oxide Templated Multifunctional Nanocarbon Networks

Small Structures
The assembly of hybrid nanocomposites often leads to the emergence of new properties. For example, DNA‐scaffolded colloidal gold can exhibit chiroplasmonic signals, while nanocomposite‐integrated carbon nanotubes display gating properties.
Graziano Rilievo, Haosen Miao, Aura Cencini, Mary Bortoluzzi, Simone Molinari, Fabio Vianello, Massimiliano Magro, Matteo Palma, Alessandro Cecconello   +8 more
doaj   +1 more source

Acquisition of Self‐Reversed Magnetization in Greigite Driven by Antiparallel Vortex‐Core Coupling During Low‐Temperature Oxidation

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Self‐reversed magnetization, acquired antiparallel to the external field, can complicate the interpretation of paleomagnetic directional records, particularly in altered greigite‐bearing sediments with anomalous magnetizations. The underlying physical process for this self‐reversal remains poorly constrained.
Shichu Chen, Liao Chang, Wyn Williams
wiley   +1 more source

Colloidal Assemblies of Oriented Maghemite Nanocrystals and their NMR Relaxometric Properties

, 2014
Elevated-temperature polyol-based colloidal-chemistry approach allows for the development of size-tunable (50 and 86 nm) assemblies of maghemite iso-oriented nanocrystals, with enhanced magnetization.
Bordonali, L., Brintakis, K., Kostopoulou, A., Lappas, A., Lascialfari, A., Orsini, F., Psycharakis, S., Ranella, A., Thangavel, K., Velu, S. K. P.   +9 more
core   +1 more source