𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Magnetic field-dependence study of the magnetocaloric properties of a superparamagnetic nanoparticle system: a Monte Carlo simulation

✍ Scribed by Serantes, D. ;Baldomir, D. ;Pereiro, M. ;Rivas, J. ;Vázquez-Vázquez, C. ;Buján-Núñez, M. C. ;Arias, J. E.

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
585 KB
Volume
205
Category
Article
ISSN
0031-8965

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The influence of the applied magnetic field on the magnetocaloric properties of a fine magnetic particle system has been studied using a Monte Carlo technique. By simulating zero field cooling (ZFC) curves under different strengths of the applied magnetic field, we have analyzed the variation of the entropy for temperatures above the maximum of the ZFC curves, where the process is reversible. The entropy curves have been observed to behave in a different fashion at low values of the magnetic field, where the peak only slightly shifts to higher temperatures with increasing fields. For larger fields, the peak rapidly shifts to higher temperatures, while the overall shape of the curve broadens over a wide temperature range. It is also observed that the blocking temperature as a function of the magnetic field shows the feature of a change from a bell‐like shape to a monotonically decreasing function, resembling what is found experimentally for intermediate values of the sample concentration. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

📜 SIMILAR VOLUMES

Role of the magnetic anisotropy in the m
Role of the magnetic anisotropy in the magnetocaloric effect for a superparamagnetic nanoparticle system: a Monte Carlo study
✍ Baldomir, D. ;Serantes, D. ;Pereiro, M. ;Rivas, J. ;Vázquez-Vázquez, C. ;Buján-N 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 571 KB

## Abstract The magnetocaloric properties of a fine magnetic particle system are studied by means of a Monte Carlo technique, focusing on the role played by the magnetic anisotropy. By varying the anisotropy of the particles, keeping fixed their size and magnetization, we have found that for a fixe

A pH-dependent variation in α-helix stru
A pH-dependent variation in α-helix structure of the S-peptide of ribonuclease A studied by Monte Carlo simulated annealing
✍ Takashi Nakazawa; Sumiko Ban; Yuka Okuda; Masato Masuya; Ayori Mitsutake; Yuko O 📂 Article 📅 2002 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 386 KB 👁 1 views

## Abstract Low‐energy conformations of the S‐peptide fragment (20 amino acid residues long) of ribonuclease A were studied by Monte Carlo simulated annealing. The obtained lowest‐energy structures have α‐helices with different size and location, depending distinctively on the ionizing states of ac