Results 41 to 50 of about 9,373 (256)

Unraveling the complex burial history of the Antrim formation in Michigan basin using paleomagnetism, rock magnetism and geochemistry

Frontiers in Earth Science, 2022
This paper presents an integrated paleomagnetic, rock magnetic and geochemical study of the Devonian Antrim shale in the Michigan Basin. Specimens were obtained from two unoriented vertical cores (named St.
Gerhard Heij, Richard Douglas Elmore
doaj   +1 more source

Resonant magneto-optic Kerr effect in the magnetic topological insulator Cr:(Sb$_x$,Bi$_{1-x}$)$_2$Te$_3$

, 2015
We report measurements of the polar Kerr effect, proportional to the out-of-plane component of the magnetization, in thin films of the magnetically doped topological insulator $(\text{Cr}_{0.12}\text{Bi}_{0.26}\text{Sb}_{0.62})_2\text{Te}_3 ...
Bestwick, A. J., Dodge, J. S., Fox, E. J., Goldhaber-Gordon, D., Griesmar, Joel, Hinton, J. P., Kou, Xufeng, Orenstein, J., Pan, Lei, Patankar, Shreyas, Wang, Jing, Wang, Kang L., Zhang, Shou-Cheng   +12 more
core   +1 more source

Authigenic magnetite formation from goethite and hematite and chemical remanent magnetization acquisition [PDF]

Geophysical Journal International, 2018
The iron oxyhydroxide goethite is unstable at elevated temperatures and can transform to magnetite under reducing conditions. In this study, various heating experiments were conducted to simulate Fe-mineral transformations during pyrogenic or burial diagenesis alteration in the presence of organic matter.
J L Till, N Nowaczyk
openaire   +5 more sources

Self Reversal of Chemical Remanent Magnetization On the Transformation of Maghemite to Haematite [PDF]

Geophysical Journal International, 1993
SUMMARY Self-reversed chemical remanent magnetization (CRM) has been observed in haematite formed on heating maghemite which has been produced by the dehydration of acicular crystals of synthetic lepidocrocite, 1 to 2 pm in length. Our experimental evidence suggests that self reversal of haematite remanence only occurs when the parent maghemite is ...
Elizabeth Mcclelland, Catherine Goss
openaire   +1 more source

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

Enhanced coercivity in Fe5C2/SiO2 core/shell nanocrystals [PDF]

AIP Advances
Rod-shaped Fe5C2 and core/shell Fe5C2/SiO2 nanocrystals were synthesized via a solution-based chemical method. Structural analysis confirmed the monoclinic phase of Fe5C2 with space group C2/c.
J. Ping Liu, Xubo Liu, Jeotikanta Mohapatra, Tej Raj Karki, Hur Abbas, Pramanand Joshi   +5 more
doaj   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Exchange Bias Effect in Au-Fe3O4 Nanocomposites [PDF]

, 2013
We report exchange bias (EB) effect in the Au-Fe3O4 composite nanoparticle system, where one or more Fe3O4 nanoparticles are attached to an Au seed particle forming dimer and cluster morphologies, with the clusters showing much stronger EB in comparison ...
Chandra, Sayan, Garcia, M. A., Huls, N. A. Frey, Iglesias, Òscar., Lee, Youngmin, Phan, M. H., Srikanth, H., Srinath, S., Sun, Shouheng, Wang, Chao   +9 more
core   +1 more source

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

Advanced Materials, EarlyView.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli, Diana García, Laia Soler, Elzbieta Pach, Kapil Gupta, Daniel Sanchez‐Rodriguez, Jordi Aguilar, Víctor Fuentes, Eduardo Solano, Cristian Mocuta, Jordi Farjas, Xavier Obradors, Teresa Puig   +12 more
wiley   +1 more source

Suppression of the Cycloidal Spin Arrangement in BiFeO3 Caused by the Mechanically Induced Structural Distortion and Its Effect on Magnetism

Frontiers in Materials, 2021
Bismuth ferrite (BiFeO3) particles are prepared by a combined mechanochemical−thermal processing of a Bi2O3 + α-Fe2O3 mixture. Structural, magnetic, hyperfine, morphological and chemical properties of the as-prepared BiFeO3 are studied using X-ray ...
Klebson Lucenildo Da Silva, Klebson Lucenildo Da Silva, Klebson Lucenildo Da Silva, Rafael Santiago Trautwein, Rodolfo Bezerra Da Silva, Martin Fabián, Erik Čižmár, Mariia Holub, Olha Skurikhina, Marta Harničárová, Marta Harničárová, Vladimír Girman, Dirk Menzel, Klaus Dieter Becker, Horst Hahn, Vladimír Šepelák, Vladimír Šepelák   +16 more
doaj   +1 more source