Complementary analyses of hollow cylindrical unioriented permanent magnet (HCM) with high permeability external layer

Autor(es)

Lobo, Carlos M. S. ^[1] ; Tosin, Giancarlo ^[2] ; Baader, Johann E. ^[3] ; Colnago, Luiz A. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, Ave Trabalhador Sao Carlene 400, BR-13566590 Sao Carlos, SP - Brazil

^[2] LMA Magnet Consultancy, Rua Filomeno Rispoli 509, BR-13564200 Sao Carlos, SP - Brazil

^[3] Univ Estadual Campinas, Fac Engn Eletr & Comp, Dept Sistemas & Energia, Ave Albert Einstein 400, BR-13083852 Campinas, SP - Brazil

^[4] Embrapa Instrumentacao, Rua 15 Novembro 1452, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MAGNETIC RESONANCE; v. 283, p. 79-88, OCT 2017.
• Citações Web of Science: 0

Resumo

In this article, several studies based on analytical expressions and computational simulations on Hollow Cylindrical Magnets with an external soft ferromagnetic material (HCM magnets) are presented. Electromagnetic configurations, as well as permanent-magnet-based structures, are studied in terms of magnetic field strength and homogeneity. Permanent-magnet-based structures are further analyzed in terms of the anisotropy of the magnetic permeability. It was found that the HCM magnets produce a highly homogeneous magnetic field as long as the magnetic material is isotropic. The dependency of the magnetic field strength and homogeneity in terms of the anisotropy of the magnetic permeability is also explored here. These magnets can potentially be used in medium-resolution NMR spectrometers and high-field NMR spectrometers. (C) 2017 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 14/22126-9 - Desenvolvimento de instrumentação e métodos de RMN no domínio do tempo para análise química, em campo
• Beneficiário: Luiz Alberto Colnago
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/12864-0 - Avaliação do efeito do campo magnético dos espectrômetro de RMN em reações químicas monitoradas in situ
• Beneficiário: Luiz Alberto Colnago
• Modalidade de apoio: Auxílio à Pesquisa - Regular