WebbSamples from 73 dikes were collected for paleomagnetic work, and subjected to both alternating field and thermal demagnetization. Characteristic magnetizations of normal and reversed polarities interpreted as original thermoremanences are carried by Ti-poor magnetites showing remanent coercive forces in the range 18-45 mT. WebbThe technique of thermal demagnetization of the natural moment has allowed the separation of partial thermoremanences induced consecutively in a lateri We use …
Marcia Ernesto Universidade de São Paulo - Academia.edu
WebbSynthetically grown and natural multidomain magnetite crystals (d ≥ 30 µm) have strongly temperature-dependent magnetic domain structures. The unblocking of domain walls at moderate temperatures (T < 120°C) makes these magnetite grains unsuitable as paleomagnetic recorders. Approximately 15% of the smaller hydrothermally grown … Webb30 nov. 2024 · Horizontally shifted and asymmetric hysteresis loops are often associated with exchange-biased samples, consisting of a ferromagnet exchange coupled with an antiferromagnet. In purely ferromagnetic samples, such effects can occur due to undetected minor loops or thermal effects. Simulations of ferromagnetic nanostructures … briars mornington peninsula
Materials Free Full-Text Coercivity Mechanism of (Nd0.8Ce0.2)2 …
WebbFigure 15. Low-temperature cycling of different initial thermoremanences induced in a hydrothermal sample with mean grain size 7.5 I•m, containing an assemblage of randomly oriented crystals dispersed in vaccum sealed in quartz capsules. The remanenc½ is normalized at 190 K. After 34ux•,orthy [1998] and Mux•,orthy and McCle!land [ 1999]. Webb27 feb. 2024 · In this research, the feasibility of additive manufacturing of permanent bonded magnets using fused deposition modelling (FDM) technology was investigated. The study employed polyamide 12 (PA12) as the polymer matrix and melt-spun and gas-atomized Nd–Fe–B powders as magnetic fillers. The effect of the magnetic particle … WebbAs the partial thermoremanences imparted in Thellier-Thellier experiments are of the pTRM * type, additivity as a prerequisite for the validity of the obtained result is not given if the … coventry auto solutions