Paramagnetic borotungstate glasses with high terbium concentration for magneto-optical applications
ALBINO, Leonardo Vieira
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Institut des Sciences Moléculaires [ISM]
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Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Institut des Sciences Moléculaires [ISM]
ALBINO, Leonardo Vieira
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Institut des Sciences Moléculaires [ISM]
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Institut des Sciences Moléculaires [ISM]
FRANCO, Douglas Faza
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
NALIN, Marcelo
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
< Reduce
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
Language
en
Article de revue
This item was published in
Journal of Non-Crystalline Solids. 2024-03-01, vol. 627, p. 122811
Elsevier
English Abstract
Glass system xTb2O3-40WO3-(60-x)B2O3, with x = 20; 22.5; 25 and 27.5 mol% were prepared by melting-quenching method. The samples were cut, polished and characterized by thermal, structural, optical, luminescent, magnetic ...Read more >
Glass system xTb2O3-40WO3-(60-x)B2O3, with x = 20; 22.5; 25 and 27.5 mol% were prepared by melting-quenching method. The samples were cut, polished and characterized by thermal, structural, optical, luminescent, magnetic and magneto-optical techniques aiming at applications in optical and magneto-optical devices. All terbium-containing samples exhibit magnetic response to neodymium magnets at room temperature. In addition, they feature thermal stability above 100 °C, wide transparency in the visible and near infrared region. Magnetic susceptibility measurements revealed the paramagnetic character of the terbium, with high Curie constants and antiparallel spin alignment. An ascending pattern in the Verdet constant was discerned as the concentration of Tb2O3 increased, culminating in a measurement of -124 rad·T−1·m−1 at 632.8 nm for the sample containing 27.5 mol% Tb2O3. This value closely approximates those observed in terbium-borogermanates glasses and single-crystal TGG, representing an alternative for the development of novel, cost-effective magneto-optical vitreous materials.Read less <
English Keywords
Borotungstate glasses
Magneto-optical glasses
Faraday rotators
Photonic glasses
European Project
Centre for functional and surface-functionalized glasses
Origin
Hal imported