Magnetic materials: a journey from finding north to an exciting printed future

2021 ◽  
Author(s):  
Karla Marina Jaimes Merazzo ◽  
Nelson Pereira ◽  
Ana Lima ◽  
Mikel Rincón Iglesias ◽  
Liliana Fernandes ◽  
...  
Keyword(s):  
Physical Properties ◽  
Magnetic Materials ◽  
Smart Materials

The potential implications/applications of printing technologies are being recognized worldwide across different disciplines and industries. Printed magnetoactive smart materials, whose physical properties can be changed by the application of external...

Recent Progress of Open-shell Organic Magnetic Materials and Their Aggregated States

2021 ◽  
Author(s):  
Shaoqiang Dong ◽  
Zhen Li
Keyword(s):  
Physical Properties ◽  
Magnetic Materials ◽  
Recent Progress ◽  
Organic Materials ◽  
Open Shell ◽  
Light Emitting ◽  
Organic Light ◽  
Organic Magnetic Materials ◽  
New Generation

In last decades, open-shell organic materials have attracted scientists’ great attention for their new chemical and physical properties, as well as their possible applications in new generation of organic light-emitting...

Modelling of Polydomain Smart Materials

1994 ◽  
Vol 360 ◽  
Author(s):  
Yongsik Yu ◽  
Alexander Roytburd
Keyword(s):  
Physical Properties ◽  
Electric Fields ◽  
Smart Materials ◽  
Practical Importance ◽  
Thermodynamic Theory ◽  
Domain Formation ◽  
Domain Structures ◽  
Layer Composite ◽  
Mechanical And Physical Properties

AbstractPolydomain materials with periodic (modulated) domain structures are of potential practical importance since they can possess unique and desirable mechanical and physical properties. A twin related domain formation can be a result of constrained structural, ferroelectric or ferromagnetic transformations. The thermodynamic theory on the deformation of layer composites containing a polydomain (polytwin) ferroelectric component is analyzed. The deformation of the layer composite under different directional electric fields and constraints is calculated.

scholarly journals INTEGRATION OF MAGNETIC MATERIALS WITH ACTUATOR ROLE ON TEXTILE SUPPORTS

2021 ◽  
Vol 2021 ◽  
pp. 308-313
Author(s):  
C. Grosu ◽  
R.M. Aileni ◽  
S. Olaru
Keyword(s):  
Magnetic Properties ◽  
Magnetron Sputtering ◽  
Magnetic Materials ◽  
Electroless Plating ◽  
Smart Materials ◽  
Magnetic Sensors ◽  
Textile Materials ◽  
Textile Structure ◽  
Spinning Process ◽  
Finishing Processes

Magnetic textile materials represent a new category of smart materials, whose properties are obtained either by adding magnetic materials during the technological processes of obtaining fibres and yarns, either by applying some magnetic materials on textile surfaces during the chemical finishing processes (electroless plating, electroplating, magnetron sputtering). Therefore, by adding magnetic nano powders in the spinning solution, fibres with magnetic properties are obtained, by adding metallic fibres, with magnetic properties, during the spinning process, magnetic yarns are obtained, and by the insertion of a certain percent of metallic/magnetic yarns during the weaving or knitting process, textile materials with magnetic properties are obtained. Thus, magnetic textile materials will possess the uniqueness of a textile structure due to specific features as flexibility, breathability or lightweight, but at the same time, also the magnetic properties necessary in multiple applications such as magnetic sensors, actuators and electromagnetic shielding used in technical applications for defence, automotive and aerospace.

An electrically conductive and ferromagnetic nano-structure manganese mono-boride with high Vickers hardness

Nanoscale ◽  
2021 ◽  
Author(s):  
Shuailing Ma ◽  
Robert Farla ◽  
Bao Kuo ◽  
Akhil Tayal ◽  
Yongsheng Zhao ◽  
...  
Keyword(s):  
Physical Properties ◽  
Magnetic Materials ◽  
Vickers Hardness ◽  
Electrically Conductive ◽  
Nano Structure ◽  
Ferromagnetic Properties ◽  
Mechanical Hardness

The combination of various desired physical properties greatly extends the applicability of materials. Magnetic materials are generally mechanically soft, yet the combination of high mechanical hardness and ferromagnetic properties is...

Modeling of Functionally Graded Thermopiezoelectro-Magnetic Materials

2012 ◽  
Vol 445 ◽  
pp. 487-491
Author(s):  
M. Sunar
Keyword(s):  
Finite Element Method ◽  
Magnetic Materials ◽  
Smart Materials ◽  
Material Properties ◽  
Functionally Graded ◽  
Field Analysis ◽  
The Finite Element Method ◽  
Graded Materials ◽  
Coupled Field ◽  
Broad Subject

Previous work has shown the importance of the mechanical behaviour of coatings and thin materals, where the elastic properties vary in depth. Such coatings and materials are investigated under the broad subject of Functionally Graded Materials (FGMs). There has been also a vast interest in the general coupled field analysis of thermopiezomagnetic materials under which smart piezoelectric and magnetostrictive materials can be studied. The smart materials are often bonded as thin films on host structures for the purpose of sensing and/or actuation. This work aims to combine these two important areas of thermopiezoelectro-magnetism and FGMs. The thermopiezoelectro-magnetic materials are modeled using the finite element method assuming variations in material properties similar to FGMs. The resulting equations of modeling are then applied to an example problem in smart material sensing/actuation.

scholarly journals Enhancing Properties of Soft Magnetic Materials: A Study into Hot Isostatic Pressing and Sintering Atmosphere Influences

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 643
Author(s):  
Ana Romero ◽  
Angel L. Morales ◽  
Gemma Herranz
Keyword(s):  
Elastic Modulus ◽  
Magnetic Materials ◽  
Smart Materials ◽  
Hot Isostatic Pressing ◽  
Soft Magnetic Materials ◽  
Soft Magnetic ◽  
Sintering Atmosphere ◽  
Isostatic Pressing ◽  
Magnetoelastic Properties ◽  
Field Dependent

Soft magnetic materials are characterized by achieving a high magnetic induction value in the presence of a small magnetic field. Common applications of these materials, such as transformers or sensors, are in constant evolution and new requirements are becoming more demanding. Nickel and its alloys are employed as smart materials taking advantage of their superior magnetoelastic properties. A metal injection molding (MIM) technique provides high-quality complex-shaped parts with a good density and controlled impurity levels, which are necessary for these applications, by carefully adjusting the sintering stage. Previous investigations have established a sintering cycle for pure nickel consisting of 1325 ∘C for 12 h within an N2-5%H2 atmosphere. Nevertheless, microstructural, mechanical and magnetoelastic responses can still be greatly enhanced. In this context, the effects of hot isostatic pressing (HIP), and sintering atmosphere have been investigated. The application of an adequate HIP treatment leads to significant improvements in comparison to the reference sintering process. It achieves almost complete densification while increasing field-dependent elastic modulus from 8.1% up to 9.6%. Additionally, the sintering atmosphere has been proven to be a key factor in reducing impurities and hence facilitating magnetic domain motion. Three different atmospheres have been studied: N2-5%H2 (with a higher gas flow), N2-10%H2-0.1%CH4 and low vacuum. Minimum carbon contents have been registered using more reducing atmospheres (N2-5%H2 and N2-10%H2-0.1%CH4) which has led to values of field-dependent elastic modulus higher than 10%. This value is 2.5 times higher than that obtained when nickel parts are processed via conventional techniques. Moreover, although minimizing carbon content has been shown to be easier and more beneficial than achieving complete densification, both strategies could be used in combination to improve and maximize magnetoelastic performance.

scholarly journals Manufacturing and Characterization of Customizable Flexible Carbon Nanotube Fabrics for Smart Wearable Applications

Textiles ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 534-546
Author(s):  
Ashley Kubley ◽  
Megha Chitranshi ◽  
Xiaoda Hou ◽  
Mark Schulz
Keyword(s):  
Carbon Nanotube ◽  
Physical Properties ◽  
Smart Materials ◽  
Large Scale ◽  
Consumer Products ◽  
Synthesis Process ◽  
Scale Production ◽  
High Level ◽  
Smart Wearable ◽  
Hybrid Fabric

The integration of carbon nanotube fabric into textiles is paving its way into smart materials and wearable applications. Potential novel applications of carbon nanotube hybrid (CNTH) materials and fabric composites span across a range of market levels from high-level PPE appropriate for military and industrial applications down to consumer products that can be used in everyday scenarios. The high-level performance properties of CNTH materials and their ability to be customized provide new possibilities for constructing fabrics with properties that are made to order. Furthermore, CNTH in combination with advanced textile compositing and construction methods allows the CNTH material to further leverage material customization aspects to meet specific requirements. The unique synthesis process for nanotube fabric allows for modification of the physical properties of the CNTH itself. The CNTH fabric combined with the customizability of standard textile composite materials and with the use of apparel design features allows for the design of materials with new combinations of physical properties. These unique properties offer high potential for developing families of smart wearable garments that can be scaled for industrial production. This article discusses the synthesis of carbon nanotube hybrid fabric, the process of hybrid fabric and textile integration, properties of the hybrid textile, and potential applications. The paper also provides an outlook towards large scale production of the hybrid textile material.

Investigation on the Dynamic Shearing Characteristics of Magnetic Responsive Gel

2011 ◽  
Author(s):  
Katsuaki Sunakoda ◽  
Naoki Yamamoto ◽  
Hiroshi Nasuno ◽  
Hirohisa Sakurai
Keyword(s):  
Magnetic Field ◽  
Physical Properties ◽  
Storage Modulus ◽  
Smart Materials ◽  
Loss Modulus ◽  
Active Vibration Control ◽  
Hysteresis Loops ◽  
Active Vibration ◽  
Magneto Rheological ◽  
Dynamic Shearing

Material which would be largely changed its physical properties such as storage modulus and loss modulus under magnetic field has a potential of application on industrial fields. Magneto-rheological (MR) fluid has been widely studied since its viscosity is changed under magnetic field, but it is restricted for application of the industrial fields as it has liquid nature. Authors are proceeding with the development of magnetic responsive gels which contain the magnetic responsive particles in consideration of their prior studies. Three kinds of magnetic gels are selected and dynamic shearing characteristics are examined. Storage modulus and loss modulus are obtained under different dynamic frequencies and different magnetic fluxes. Some physical properties such as storage modulus and loss modulus are largely changed by applying magnetic field. The developed gels have an effect of energy dissipation, judging from hysteresis loops of stress-strain. And these smart materials have a potential of semi active vibration control materials.

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