Results 101 to 110 of about 9,373 (256)

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

Archaeometry, EarlyView.
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

Structural, morphological, magnetic, and electrical properties of ZrFe2-xNixO5 nanoparticles (x = 0–0.05) synthesized via sol-gel auto-combustion

Next Materials
The present work focuses on a detailed investigation into the structural, morphological, magnetic, impedance, and dielectric properties of Ni-doped ZrFe2O5, synthesized via the sol-gel auto-combustion method.
Avadhut Manage, B.G. Hegde, Shidaling Matteppanavar   +2 more
doaj   +1 more source

A detailed paleomagnetic and rock-magnetic investigation of the Matuyama-Bruhnes geomagnetic reversal recorded in tephra-paleosol sequence of Tlaxcala(Central Mexico)

Frontiers in Earth Science, 2015
Geomagnetic reversals are global phenomena, for about 50 years the paleomagnetists attempted to acquire as many detailed records as possible using the magnetic memory of sediments and lava flows.
Ana Maria Soler-Arechalde, Avtandyl eGoguitchaichvili, Ángel eCarrancho, Sergey eSedov, Cecilia Irene Caballero-Miranda, Beatriz eOrtega, Berenice eSolís, Juan Julio Morales Contreras, Jaime eUrrutia-Fucugauchi, Francisco eBautista   +9 more
doaj   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source

Structure and tunable temperature coefficient of magnetization of Mn4-xGaxC alloys prepared by induction melting method

Materials Research Express
The magnetization of most magnetic materials decreases monotonically with increasing temperature. In this work, we found that the temperature coefficient of magnetization of Mn _4- _x Ga _x C alloys can be tuned from negative values to positive values by
Yinghua Liang, Tingting Qi, Baochao Zhang, Qiang Zhang, Chul-Jin Choi, Jihoon Park, Tianhong Zhou, Qiong Wu, Hongliang Ge, Pingzhan Si   +9 more
doaj   +1 more source

Vortex avalanches in the non-centrosymmetric superconductor Li2Pt3B

, 2008
We investigated the vortex dynamics in the non-centrosymmetric superconductor Li_2Pt_3B in the temperature range 0.1 K - 2.8 K. Two different logarithmic creep regimes in the decay of the remanent magnetization from the Bean critical state have been ...
Maple, M. B., McElroy, C., Miclea, C. F., Mota, A. C., Sayles, T. A., Sigrist, M., Steglich, F., Taylor, B. J.   +7 more
core   +1 more source

Northeastern Greenland Paleomagnetic Records Indicate the Influence of Geomagnetic Flux Lobe Intensity on Virtual Geomagnetic Pole Migration During the Holocene

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Paleomagnetic and rock magnetic analyses were conducted on sediment cores from the northeastern Greenland Shelf and Young Sound along the western edge of Fram Strait. The paleomagnetic signal in all three sediment cores is characterized by a strong and stable single component magnetization carried by low coercivity ferrimagnetic single domain ...
Juliette Girard, Guillaume St‐Onge, Christof Pearce, France Lagroix, Marit‐Solveig Seidenkrantz, Katrine Juul Andresen, Jean‐Carlos Montero‐Serrano, Pierre Francus   +7 more
wiley   +1 more source

Magnetic and Isotopic Analyses Unravel the Abundance and Sources of Magnetic Nanoparticles in Urban PM2.5

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Magnetic nanoparticles (NPs) are increasingly recognized as an emerging threat to ecosystems and human health, yet their mass concentrations and sources in urban atmosphere remain poorly characterized. Here, we developed a robust methodology for the extraction, quantification, and source apportionment of magnetic NPs in urban PM2.5.
Jiaxin Ye, Yaqun Yang, Xiangyang Bi, Wei Guo, Qianqian Yu, Qian Luo, Zongmin Zhu   +6 more
wiley   +1 more source

Magnetic and transport properties of iron-platinum arsenide Ca10(Pt4-{\delta}As8)(Fe2-xPtxAs2)5 single crystal

, 2012
We report superconducting properties of single crystalline Ca10(Pt4-{\delta}As8)(Fe2-xPtxAs2)5 by X-ray diffraction, magnetization, resistivity, and magneto-optical imaging measurements. The magnetization measurements reveal fish-tail hysteresis loop and
Ding, Qing-Ping, Mohan, Shyam, Nakajima, Yasuyuki, Taen, Toshihiro, Tamegai, Tsuyoshi, Tsuchiya, Yuji   +5 more
core   +1 more source

Mechanochemical Enhancement of Siderite‐To‐Magnetite Conversion in Faults

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Magnetic phases in fault rocks offer potential “geothermometers” for estimating frictional heating during fault slip. However, the thermochemical kinetics of magnetic minerals subjected to shear deformation in hydrothermal fluids‐conditions typical of natural faults ‐ remains poorly understood, hindering accurate temperature estimates.
Tingting Du, Tao Yang, Lu Yao, Qi Zhang, Ting Li, Tsafrir Levi, Ram Weinberger, Shmuel Marco   +7 more
wiley   +1 more source