Origin of magnetic and magnetoelastic tweedlike precursor modulations in ferroic materials

Based on experimental observations of modulated magnetic patterns in a Co0.5Ni0.205Ga0.295 alloy, we propose a model to describe a (purely) magnetic tweed and a magnetoelastic tweed. The former arises above the Curie (or Nel) temperature due to magnetic disorder. The latter results from compositional fluctuations coupling to strain and then to magnetism through the magnetoelastic interaction above the structural transition temperature. We discuss the origin of purely magnetic and magnetoelastic precursor modulations and their experimental thermodynamic signatures.

Cristalização e taxa crítica de resfriamento para vitrificação do poli(sebacato de decametileno)

We synthesized Poly(decamethylene sebacate) - P10MS - and studied its overall crystallization rates in a range of temperatures using Differential Scanning Calorimetry in isothermal conditions, which enabled us to identify the crystallization mechanism by means of the Johnson-Mehl-Avrami-Kolmogorov equation. The critical cooling rate (Rc) to vitrify the P10MS was determined using a non-isothermal method proposed by Barandiarán & Colmenero (BC). The value of Rc is around 50-250 K/s, which confirms the experimentally observed difficulty to vitrify this polymer.

De lingvis igneis, qvam Christi redemtoris auxilio nixus

Invocatio: [Alpha et Omega].

De centro oscillationis

Painovuosi nimekkeestä.

De nive

Invocatio: KREIKKAA Alpha, omega.

Exercitium academicum

Invocatio: Deo duce.

De regno WestroGothorum in Gallia

Invocatio: I.N.D.A.

De sensibus hominis

Invocatio: Numine trisagio auspice et duce.

Vaticinium Jacobi de Schiloh

Invocatio: [hepreaa].

Om fängelser

Invocatio: I.J.N.

De erica vulgari et pteride aquilina

Painovuosi nimekkeestä.

Convictio logica

Invocatio: [Alpha et Omega].

De legislatione

Invocatio: Dirige Christe conatus.

De commodis et incommodis diversarum formarum regiminis

Invocatio: Maneat mecum Moderator Maximus.

De disciplina morali veterum Hyperboreorum

Invocatio D.D.