Results 51 to 60 of about 1,324 (221)

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Hysteresis properties of chondritic meteorites: New results for chondrules from the Allende meteorite [PDF]

Geofísica Internacional, 2002
Hysteresis properties of twenty individual chondrules from a ~50 cc piece of the Allende carbonaceous chondritic meteorite, with diameters between about 0.08 and 0.44 cm are reported. Coercive force Hc varies from about 3 mT to 32.5 mT.
Jaime Urrutia-Fucugauchi, Daniel Flores-Gutiérrez   +1 more
doaj  

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Hysteresis of Natural Magnetite Ensembles: Micromagnetics of Silicate‐Hosted Magnetite Inclusions Based on Focused‐Ion‐Beam Nanotomography

Geochemistry, Geophysics, Geosystems, 2020
Three‐dimensional geometries of silicate‐hosted magnetic inclusions from the Harcus intrusion, South Australia have been determined using focused‐ion‐beam nanotomography (FIB‐nt). By developing an effective workflow, the geometries were reconstructed for
Even S. Nikolaisen, Richard J. Harrison, Karl Fabian, Suzanne A. McEnroe   +3 more
doaj   +1 more source

Paleomagnetic, rock magnetic workshop

Eos, Transactions American Geophysical Union, 1991
A total of 52 paleomagnetists, rock magnetists, and structural geologists met for the 5th annual Northeastern Paleomagnetic and Rock Magnetic Workshop, held at Erindale College, University of Toronto in Mississauga, Ontario, on November 1–2. The attendees came from as far away as Lamont‐Doherty Geological Observatory, N.Y.; University of Massachusetts,
Vincenzo Costanzo, David Dunlop, Li Guo, Henry Halls, Özden Özdemir, Song Xu   +5 more
openaire   +1 more source

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

Advanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda, Thor Hvid‐Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Fardin Ghaffari‐Tabrizi, Maja A. Dunstan, Kasper S. Pedersen, Dae‐Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier   +11 more
wiley   +1 more source

ROCK MAGNETISM AND GEOCHEMISTRY ANALYSES OF SURFACE SEDIMENTS AT MAAR LAKE: STUDY CASE AT RANU KLAKAH, EAST JAVA, INDONESIA

Rudarsko-geološko-naftni Zbornik
Ranu Klakah is a maar lake that is part of the Lamongan Monogenetic Volcanic Field (LMVF), East Java, Indonesia, which has a closed hydrological system.
Fathia Matondang, Satria Bijaksana, Ulvienin Harlianti, Ni Komang Tri Suandayani, Yohansli Noya, Putu Billy Suryanata, Khalil Ibrahim, Thomas Andre Maris Widagdo, Mamilla Venkateshwarlu, Animireddi Venkata Satyakumar   +9 more
doaj   +1 more source

Temperature‐Induced Nonvolatile Switching through Thermal Hysteresis in a Gd3Fe5O12/Ho3Fe5O12 Exchange‐Coupled Rare‐Earth Iron Garnet Bilayer

Advanced Functional Materials, EarlyView.
Reducing power consumption in spintronic memory remains a major challenge due to the need for high current densities. A bilayer of gadolinium and holmium iron garnets enables purely temperature‐induced, nonvolatile magnetic switching with bistable states within a ±25 K range. This approach achieves up to 66‐fold lower energy use than current spin–orbit
Junseok Kim, Phuoc Cao Van, Jong‐Ryul Jeong, Hyungyu Jin   +3 more
wiley   +1 more source

Magnetic studies of natural goethite samples from Tharsis, Huelva, Spain [PDF]

Geofísica Internacional, 2006
Magnetic properties of goethite have not been widely studied. Natural samples often contain complex mineral mixtures. Material from Tharsis (Huelva, Spain) is studied in order to corroborate the presence of goethite using rock magnetic measurements ...
M. A. E. Chaparro, A. M. Sinito, R. E. de Barrio, J. C. Bidegain   +3 more
doaj  

Control of Source‐To‐Sink Processes on the Dispersal, Fractionation, and Deposition of Magnetic Minerals in a Tropical Mesotidal Estuarine System

Geochemistry, Geophysics, Geosystems, 2023
This study aims to elucidate the control of source‐to‐sink processes on the sediment dynamics of a complex mesotidal tropical estuarine system using rock magnetic, sedimentological, mineralogical, and geochemical methods.
Firoz Badesab, Nitin Kadam, Sriram Gullapalli, Pawan Dewangan, Virsen Gaikwad, Narayan Satelkar, Sadashiv Khalap, Mamilla Venkateshwarlu, Rakesh Kumar Sahoo, Walsh Fernandes, Piyush Dahake, Deblina Banerjee   +11 more
doaj   +1 more source