Title:
MAGNETIC PHASE TRANSITION COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/138253
Kind Code:
A1
Abstract:
A phase transition composite material (1) includes a dispersion of single-domain magnetic nanoparticles (2) and an elastic encapsulant (3) arranged to separate the nanoparticles (2). The composite material (1) is deformable between first and second states. In the first state the material is relaxed and in the second state the material is stressed. In the first state, the magnetizations of the magnetic nanoparticles (2) are less ordered (e.g., the magnetic nanoparticles (2) exhibit superparamagnetism) and, in the second state, the magnetizations of the magnetic nanoparticles (2) are more ordered (e.g., the magnetic nanoparticles (2) exhibit superferromagnetism or superantiferromagnetism).
Inventors:
PILLOW JONATHAN (GB)
CASS MICHAEL (GB)
CASS MICHAEL (GB)
Application Number:
PCT/GB2019/050098
Publication Date:
July 18, 2019
Filing Date:
January 15, 2019
Export Citation:
Assignee:
CAMBRIDGE DISPLAY TECH LTD (GB)
SUMITOMO CHEMICAL CO (JP)
SUMITOMO CHEMICAL CO (JP)
International Classes:
H01F1/00; H01F1/01
Foreign References:
| EP3210216A1 | 2017-08-30 | |||
| US9366460B2 | 2016-06-14 |
Other References:
TANG ET AL: "Stress dependent transforming behaviors and associated functional properties of a nano-precipitates induced strain glass alloy", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 622, 1 November 2014 (2014-11-01), pages 622 - 627, XP029101281, ISSN: 0925-8388, DOI: 10.1016/J.JALLCOM.2014.10.142
YU ET AL: "Recent progress in Heusler-type magnetic shape memory alloys", RARE METALS, vol. 34, no. 8, 30 June 2015 (2015-06-30), pages 527 - 539, XP035513546, ISSN: 1001-0521, [retrieved on 20150630], DOI: 10.1007/S12598-015-0534-1
MAJA ET AL: "Electrocaloric and elastocaloric effects in soft materials", PHILOSOPHICAL TRANSACTIONS, vol. 374, no. 2074, 11 July 2016 (2016-07-11), GB, pages 20150301, XP055573250, ISSN: 1364-503X, DOI: 10.1098/rsta.2015.0301
M. R. DUDEK ET AL.: "Colossal Magnetocaloric Effect in Magnetoauxetic Systems", SMART MATERIALS AND STRUCTURES, vol. 24, 2015, pages 085027
M. R. DUDEK ET AL.: "Colossal Magnetocaloric Effect in Magneto-auxetic Systems ibid., the contents of which is incorporated herein by reference", CHANGING THE SEPARATION OF ATOMS IN A LATTICE STRUCTURE CAN BE DIFFICULT
O. PETRACIC: "Superparamagnetic Nanopartide Ensemble", SUPERLATTICES AND MICROSTRUCTURES, vol. 47, 2010, pages 569
YU ET AL: "Recent progress in Heusler-type magnetic shape memory alloys", RARE METALS, vol. 34, no. 8, 30 June 2015 (2015-06-30), pages 527 - 539, XP035513546, ISSN: 1001-0521, [retrieved on 20150630], DOI: 10.1007/S12598-015-0534-1
MAJA ET AL: "Electrocaloric and elastocaloric effects in soft materials", PHILOSOPHICAL TRANSACTIONS, vol. 374, no. 2074, 11 July 2016 (2016-07-11), GB, pages 20150301, XP055573250, ISSN: 1364-503X, DOI: 10.1098/rsta.2015.0301
M. R. DUDEK ET AL.: "Colossal Magnetocaloric Effect in Magnetoauxetic Systems", SMART MATERIALS AND STRUCTURES, vol. 24, 2015, pages 085027
M. R. DUDEK ET AL.: "Colossal Magnetocaloric Effect in Magneto-auxetic Systems ibid., the contents of which is incorporated herein by reference", CHANGING THE SEPARATION OF ATOMS IN A LATTICE STRUCTURE CAN BE DIFFICULT
O. PETRACIC: "Superparamagnetic Nanopartide Ensemble", SUPERLATTICES AND MICROSTRUCTURES, vol. 47, 2010, pages 569
Attorney, Agent or Firm:
GAHLINGS, Steven (GB)
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