Étude des structures cristalline et magnétique du supraconducteur à base de fer quasi unidimensionnel BaFe₂Se₃

Autor: Zheng, Wen-Gen

It has been recently observed that a superconducting phase emerges under pressure in the Fe-based spin-ladders BaFe₂Se₃. The low dimensionality of the Fe spin-ladders, which simplifies the elaboration of theoretical models, should help to underst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______166::9e983379abff25cd8c3b0f6ff2c94dc7
https://theses.hal.science/tel-03722197

Magnetopause study by means of a multi-fluid approach

Autor: Manuzzo, Roberto

Publikováno v: Plasma Physics [physics.plasm-ph]. Sorbonne Université; Università degli studi (Pise, Italie), 2019. English. ⟨NNT : 2019SORUS537⟩
Plasma Physics [physics.plasm-ph]. Sorbonne Université; Università degli studi di Pisa, 2019. English

In this thesis, new methods are presented which are able to obtain a "realistic" multi-fluid analysis of the Earth’s magnetopause. This goal is reached in three main steps. The analysis of spacecraft data acquired across the magnetopause is done by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e8288d418b6f1b01f110c64f43ee388d
https://tel.archives-ouvertes.fr/tel-02486318

Development of detectors dedicated to thin films studies by Mössbauer spectrometry : application to characterization of magnetics properties of multiferroics oxides films

Autor: Appert, Florian

Publikováno v: Science des matériaux [cond-mat.mtrl-sci]. Normandie Université, 2017. Français. ⟨NNT : 2017NORMR133⟩

This work is devoted to the development of two Mössbauer detectors dedicated to thin films studies by conversion electron Mössbauer spectrometry (CEMS), and to their use for the characterization of bismuth ferrite BiFeO3 (BFO) epitaxials thin films

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::cdf11bcdfdec3004c7a8cc7dbc1067bd
https://tel.archives-ouvertes.fr/tel-01778403/file/appertflorian2.pdf

Propriétés structurales, magnétiques et magnétocaloriques de pnictures isotypes de Mn(Fe,Co)P

Autor: Khadechi-Haj Khlifa, Sonia

La plupart des pnictures ternaires de formule générale MM'X (où M et M' sont des métaux de transition et X un élément p tel que P et As) cristallisent avec une structure dérivée de type Fe2P présentant un effet magnétocalorique (MCE) élev�

Externí odkaz: http://www.theses.fr/2016GREAY031/document

Les ferrites du type RFe2O4 à valence mixte

Autor: Bourgeois, Julie

Publikováno v: Chimie. Université Caen Basse Normandie, 2012. Français. ⟨NNT : 9992402⟩

LuFe2O4 belongs to the rare-earth ferrite family RFe2O4 (R=Dy to Lu, Y), whose structure can be described as a stacking along c of [LuO2]∞ and [Fe2O4]∞ compact layers. This compound is attracting a lot of attention nowadays because of its multife

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3515::83079ceac1980d0b5a3f8e26861a8b7a
https://theses.hal.science/tel-01084285