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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Investigation of the structural and magnetic phase transitions in CeSiₓ by neutron scattering

Murphy, Helen M. January 1993 (has links)
In an attempt to gain a greater understanding of the magnetic interactions within the rare-earth metallic alloy CeSix (1.60 ≤ x ≤ 2.00) and the validity of the various theories of magnetism, intermediate valency and the 'dense' Kondo effect that are commonly invoked to account for its magnetic behaviour, the structural and magnetic properties of CeSi1.80 and CeSi1.85 samples have been investigated using the technique of thermal neutron scattering. Spin polarized neutrons and neutron spin polarization analysis have been employed to unambiguously separate the paramagnetic and antiferromagnetic scattering of CeSix samples from all other scattering contributions.
2

Investigation of the magnetic and lattice properties of REPtIn and RE₂AgIn

Watson, Kevin Campbell January 1998 (has links)
The three terminal capacitance dilatometer is the most sensitive means for measuring the thermal expansion of solid samples at low temperatures. A measuring system based around capacitance dilatometry has been automated to provide a means of routine data collection of length changes in samples in the temperature range 1.5 K to 300 K. The dilatometer has been used in conjunction with magnetisation and neutron scattering measurements to investigate members from rare earth alloys as part of a wider study of the magnetic and lattice properties of isostructural rare earth alloy series, in particular the rare earth alloy series RE2AgIn (RE = Tb, Ho and Er) and REPtIn (RE = Nd, Gd, Tb, Dy, Ho and Er). Two samples have been investigated using thermal expansion, Tb2AgIn and TbPtIn. Both order magnetically at temperatures around 50 K and phase transitions corresponding to the ordering were observed using the capacitance dilatometer for the samples. The data for the alloy series is presented and discussed with a view to describing the complex nature of these alloy systems.
3

Magnetism in rare-earth superlattices and alloys

Sarthour, Roberto S. January 1999 (has links)
No description available.
4

The chemical and magnetic structures of rare earth alloys and superlattices

Clegg, Paul S. January 2000 (has links)
No description available.
5

Compositional Dependence of g-Factor and Damping Constant of GdFeCo Amorphous Alloy Films

Kato, T., 加藤, 剛志, Nakazawa, K., Komiya, R., Nishizawa, N., Tsunashima, S., Iwata, S. 11 1900 (has links)
No description available.
6

Caracterização magnética e microestrutural de ímãs sinterizados de Pr-Fe-B processados pela técnica de transferência de pós e utilizando decrepitação por hidrogênio

SOARES, EDSON P. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:50:03Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:56Z (GMT). No. of bitstreams: 1 10449.pdf: 4731393 bytes, checksum: e712ff415dbc885976e03c8cf9a7af16 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
7

Caracterização magnética e microestrutural de ímãs sinterizados de Pr-Fe-B processados pela técnica de transferência de pós e utilizando decrepitação por hidrogênio

SOARES, EDSON P. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:50:03Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:56Z (GMT). No. of bitstreams: 1 10449.pdf: 4731393 bytes, checksum: e712ff415dbc885976e03c8cf9a7af16 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
8

Estudo das propriedades e microestrutura de ímãs permanentes de terras raras e metais de transição preparados pelo processo de decrepitação hidrogênio

ANGELO, JONHSON D. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:50:06Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:01Z (GMT). No. of bitstreams: 1 10456.pdf: 8611331 bytes, checksum: 2b268dfee5c779fdbf6fe784ca70b17b (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP / FAPESP:01/12989-0
9

Estudo das propriedades e microestrutura de ímãs permanentes de Pr-Fe-B-(Co-Nb) preparados pelo processo de hidrogenação, desproporção, dessorção e recombinação (HDDR)

BARBOSA, LUZINETE P. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:50:14Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:40Z (GMT). No. of bitstreams: 1 10553.pdf: 9807833 bytes, checksum: fcd7e02a22a70e9ee79a1dcccaf7f496 (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
10

Estudo da microestrutura e propriedades de ligas magneticas e imas permanentes de terras raras - metais de transicao - boro processados com hidrogenio

TAKIISHI, HIDETOSHI 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:45:52Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:05:37Z (GMT). No. of bitstreams: 1 07542.pdf: 8778356 bytes, checksum: 4518d6e06c451cc0d8b83aa7b2a1ac53 (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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