scholarly journals Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jiří Vohlídal ◽  
Carlos F. O. Graeff ◽  
Roger C. Hiorns ◽  
Richard G. Jones ◽  
Christine Luscombe ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Electromagnetic Field ◽  
Materials Science ◽  
Polymer Materials ◽  
Polymer Systems ◽  
Responsive Polymers ◽  
Interdisciplinary Field ◽  
Wide Acceptance ◽  
Responsive Polymer

Abstract These recommendations are specifically for polymers and polymer systems showing a significant response to an electromagnetic field or one of its components (electric field or magnetic field), i.e., for electromagnetic-field-responsive polymer materials. The structures, processes, phenomena and quantities relating to this interdisciplinary field of materials science and technology are herein defined. Definitions are unambiguously explained and harmonized for wide acceptance by the chemistry, physics, polymer and materials science communities. A survey of typical electromagnetic-field-responsive polymers is included.

CO2-Responsive polymer materials

2017 ◽  
Vol 8 (1) ◽  
pp. 12-23 ◽  
Author(s):  
Hanbin Liu ◽  
Shaojian Lin ◽  
Yujun Feng ◽  
Patrick Theato
Keyword(s):  
Smart Material ◽  
Polymer Materials ◽  
Responsive Polymers ◽  
Material Systems ◽  
Responsive Polymer ◽  
Smart Material Systems

This paper reviews the chemical fundamentals of CO2-responsive polymers as well as the latest reported “smart” material systems switched by CO2.

Development of a Novel Vibrating Sample Magnetometer

2007 ◽  
Vol 537-538 ◽  
pp. 413-418 ◽  
Author(s):  
István Mészáros
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
External Magnetic Field ◽  
Materials Science ◽  
Science Laboratory ◽  
Vibrating Sample Magnetometer ◽  
Hard Magnetic Materials ◽  
Measuring Device ◽  
Parallel Motion ◽  
New Type

A new type of vibrating sample magnetometer (VSM) was designed for measuring the magnetic properties of soft and hard magnetic materials is described. The developed instrument differs from the traditional Foner type because in our system the motion of the specimen is parallel with the lines of the external magnetic field. Therefore, this instrument can be called parallel motion vibrating sample magnetometer (PMVSM). The special vibrating system contains a vibrating rod which holds the specimen. This arrangement can make the sample replacement and positioning fast and convenient. Because of the versatility of the PMVSM instrument it could be a useful measuring device for materials science laboratory and educational purposes as well.

Mechanical and Magnetic Properties of Polydisperse Magnetoelastics

2009 ◽  
Vol 152-153 ◽  
pp. 155-158 ◽  
Author(s):  
L.V. Nikitin ◽  
R.A. Talipov ◽  
A.P. Kazakov ◽  
G.V. Stepanov
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Shear Modulus ◽  
Magnetic Particles ◽  
Hysteresis Loops ◽  
Polymer Materials ◽  
Torsional Vibrations ◽  
Classic Method ◽  
Large Particles ◽  
Good Coincidence

In this work are considered new magneto-controlled materials – magnetoelastics, their elastic and magnetic properties. Much attention is devoted to influence of distribution of magnetic particles by their size on these properties. It was found that the application of a magnetic field on magnetoelastics with larger particles leads to a considerable rise of the shear modulus. It was shown that damping of torsional vibrations strongly depends on both value of magnetic field and concentration of large particles. A comparison between shear modulus, obtained from classic method and from torsional vibrations was made and a good coincidence of results was found. It was found out that hysteresis loops for considered polymer materials have unusual character.

Structure-property relationships of PE/PP sandwiched films

1987 ◽  
Vol 45 ◽  
pp. 454-455
Author(s):  
J. Petermann ◽  
G. Broza ◽  
U. Rieck ◽  
A. Jaballah ◽  
A. Kawaguchi
Keyword(s):  
Mechanical Tests ◽  
Polymer Materials ◽  
Ionic Crystals ◽  
Structure Property ◽  
Polymer Systems ◽  
Structure Property Relationships ◽  
Oriented Films ◽  
Materials Used ◽  
Polymer Laminates ◽  
Heated Glass

Oriented overgrowth of polymer materials onto ionic crystals is well known and recently it was demonstrated that this epitaxial crystallisation can also occur in polymer/polymer systems, under certain conditions. The morphologies and the resulting physical properties of such systems will be presented, especially the influence of epitaxial interfaces on the adhesion of polymer laminates and the mechanical properties of epitaxially crystallized sandwiched layers.Materials used were polyethylene, PE, Lupolen 6021 DX (HDPE) and 1810 D (LDPE) from BASF AG; polypropylene, PP, (PPN) provided by Höchst AG and polybutene-1, PB-1, Vestolen BT from Chemische Werke Hüls. Thin oriented films were prepared according to the method of Petermann and Gohil, by winding up two different polymer films from two separately heated glass-plates simultaneously with the help of a motor driven cylinder. One double layer was used for TEM investigations, while about 1000 sandwiched layers were taken for mechanical tests.

Investigation of the Structure and Magnetic Properties of Bulk Amorphous FeCoYB Alloy

2017 ◽  
Vol 68 (9) ◽  
pp. 2162-2165 ◽  
Author(s):  
Katarzyna Bloch ◽  
Mihail Aurel Titu ◽  
Andrei Victor Sandu
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Hyperfine Field ◽  
Irreversible Processes ◽  
Magnetization Process ◽  
Casting Method ◽  
The Core ◽  
Injection Casting ◽  
Core Losses ◽  
Microstructural Studies

The paper presents the results of structural and microstructural studies for the bulk Fe65Co10Y5B20 and Fe63Co10Y7B20 alloys. All the rods obtained by the injection casting method were fully amorphous. It was found on the basis of analysis of distribution of hyperfine field induction that the samples of Fe65Co10Y5B20 alloy are characterised with greater atomic packing density. Addition of Y to the bulk amorphous Fe65Co10Y5B20 alloy leads to the decrease of the average induction of hyperfine field value. In a strong magnetic field (i.e. greater than 0.4HC), during the magnetization process of the alloys, where irreversible processes take place, the core losses associated with magnetization and de-magnetization were investigated.

scholarly journals Sensitivity of PS/CoPd Janus particles to an external magnetic field

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17051-17057
Author(s):  
Anna Eichler-Volf ◽  
Yara Alsaadawi ◽  
Fernando Vazquez Luna ◽  
Qaiser Ali Khan ◽  
Simon Stierle ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
External Magnetic Field ◽  
Magnetic Fields ◽  
Janus Particles ◽  
Weak Magnetic Fields

PS/CoPd Janus particles respond very sensitively to application of low external magnetic fields. Owing to the magnetic properties, the PS/CoPd particles may be used, for example, to sense the presence of weak magnetic fields as micro-magnetometers.

Influence of a Magnetic Field on the Growth and Magnetic Properties of Zn0.15Fe2.85O4 Nanoparticle Chains

2021 ◽  
Vol 125 (3) ◽  
pp. 2045-2054
Author(s):  
Xiaochao Zhou ◽  
Zhaoxia Kou ◽  
Wen Zhang ◽  
Meijuan Wang ◽  
Jun Du ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Nanoparticle Chains

scholarly journals Controlled electrochemical growth and magnetic properties of CoFe2O4 nanowires with high internal magnetic field

2021 ◽  
pp. 159196
Author(s):  
Nabil Labchir ◽  
Abdelkrim Hannour ◽  
Abderrahim Ait Hssi ◽  
Didier Vincent ◽  
Patrick Ganster ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Internal Magnetic Field ◽  
Electrochemical Growth

scholarly journals Effects of Perpendicular Magnetic Field Annealing on the Structural and Magnetic Properties of [Co/Ni]2/PtMn Thin Films

2021 ◽  
Vol 7 (3) ◽  
pp. 38
Author(s):  
Roshni Yadav ◽  
Chun-Hsien Wu ◽  
I-Fen Huang ◽  
Xu Li ◽  
Te-Ho Wu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Magnetic Properties ◽  
Photoelectron Spectroscopy ◽  
Perpendicular Magnetic Field ◽  
Face Centered Cubic ◽  
Lattice Image ◽  
X Ray ◽  
Field Annealing ◽  
Face Centered

In this study, [Co/Ni]2/PtMn thin films with different PtMn thicknesses (2.7 to 32.4 nm) were prepared on Si/SiO2 substrates. The post-deposition perpendicular magnetic field annealing (MFA) processes were carried out to modify the structures and magnetic properties. The MFA process also induced strong interlayer diffusion, rendering a less sharp interface between Co and Ni and PtMn layers. The transmission electron microscopy (TEM) lattice image analysis has shown that the films consisted of face-centered tetragonal (fct) PtMn (ordered by MFA), body-centered cubic (bcc) NiMn (due to intermixing), in addition to face-centered cubic (fcc) Co, Ni, and PtMn phases. The peak shift (2-theta from 39.9° to 40.3°) in X-ray diffraction spectra also confirmed the structural transition from fcc PtMn to fct PtMn after MFA, in agreement with those obtained by lattice images in TEM. The interdiffusion induced by MFA was also evidenced by the depth profile of X-ray photoelectron spectroscopy (XPS). Further, the magnetic properties measured by vibrating sample magnetometry (VSM) have shown an increased coercivity in MFA-treated samples. This is attributed to the presence of ordered fct PtMn, and NiMn phases exchange coupled to the ferromagnetic [Co/Ni]2 layers. The vertical shift (Mshift = −0.03 memu) of the hysteresis loops is ascribed to the pinned spins resulting from perpendicular MFA processes.

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