Essays about: "Curie temperature"

Showing result 1 - 5 of 10 essays containing the words Curie temperature.

  1. 1. Paleomagnetic and Thermomagnetic Studies on Rock Samples from COSC - 1 Drilling Project

    University essay from Uppsala universitet/Geofysik

    Author : Wanyi Li; [2022]
    Keywords : Scandinavian Caledonides; remanent magnetization; AF demagnetization; temperature dependent magnetic susceptibility; Skandinaviska Kaledoniderna; remanent magnetism; växelfältsavmagnetisering; temperaturberoende av magnetisk susceptibilitet;

    Abstract : The COSC-1 borehole located in the Lower Seve nappe of the Central Scandinavian Caledonides is intended to study the tectonic evolution of the Paleozoic orogen. The drilling project reached a depth of 2495.8m and obtained samples from different lithologal units of mica schist, amphibolite, gneiss, and mylonitic gneisses. READ MORE

  3. 2. Tuning the Curie temperature and phase fraction of FeNi25-based alloys with Mn and Co for magnetocaloric applications

    University essay from KTH/Materialvetenskap

    Author : Marie Sanglé-Ferrière; [2020]
    Keywords : Thesis; magnetocaloric effect; Curie temperature; FCC; FeNi25; Avhandling; magnetokalorisk effekt; Curie-temperatur; FCC; FeNi25;

    Abstract : This paper discusses the search of an FeNi25-based alloy with a face-centered cubic crystal structure exhibiting a Curie point around room temperature, for magnetocaloric applications. Fe was substituted in various amounts with FCC-stabilising elements Mn and Co as these elements respectively decrease and increase the Curie Temperature, thus enabling to tune the Curie point. READ MORE

  4. 3. Setup Implementation for a Direct Measurement Technique of the Magnetocaloric Effect

    University essay from KTH/Materialvetenskap

    Author : Ferdinand Posva; [2020]
    Keywords : Magnetocaloric effect; Direct method; Gadolinium; High entropy alloys;

    Abstract : This project presents an attempt to construct a setup and implement a reliable technique for measuring the magnetocaloric effect (MCE) on various materials via a direct method for the acquisition of the data. The main objective of the latter is to produce a ∆Tadiabatic vs T graph over a reasonable temperature span (-100◦C up to 220◦C) by thermal monitoring of a magnetic material exposed to an oscillating magnetic field with a maximum strength of 1. READ MORE

  5. 4. Characterizing magnetic susceptibility and remanent magnetization of magnetite and hematite rich drill-core samples at Blötberget

    University essay from Uppsala universitet/Geofysik

    Author : Andreas Bjork; [2018]
    Keywords : Verwey; Morin; Curie; Néel; magnetite; hematite; alteration; iron-ore; quality control; kappabridge; hysteresis; susceptibility; anisotropy; Verwey; Morin; Curie; Néel; magnetit; hematit; oxidation; järnmalm; kvalitetskontroll; kappabridge; hysteresis; susceptibilitet; anisotropi;

    Abstract : Laboratory magnetic measurements are used to develop a methodology to characterize the Kiruna-type Rare Earth Elements (REE) bearing apatite iron-oxide deposits at Blötberget in central Sweden. This high-grade ore deposit is known to have sharp boundaries between lens shaped main ore bodies of magnetite-rich ore, and a complex hematite-rich ore associated with pegmatites and skarn formation. READ MORE

  6. 5. Magnetism of Nanocrystallized Amorphous Fe75B10Si15

    University essay from KTH/Materialvetenskap

    Author : Arnab Chakraborty; [2012]
    Keywords : amorphous metals; nanocrystalline materials; magnetism; soft magnetic material;

    Abstract : Amorphous ribbons of alloy composition Fe75B10Si15 are cast by melt spinning and annealed to partially nanocrystalline states. The magnetic properties are investigated by VSM and MTGA. Structure is examined using XRD and SEM. READ MORE