The Magnetic Action Phenomenon is Responsible to the Processes of DNA Replication and the Shortening of the Telomere | Chapter 10 | Advanced Research in Biological Science Vol. 5

 The unit discusses about Magnetic Properties Govern the Processes of DNA Replication and the Shortening of the Telomere. Deoxyribonucleic acid (DNA) is the aircraft carrier of genetic facts in living systems. Magnetic characteristics of pristine DNA and DNA-hardware complexes have happened intensively examined in biological circumstances The hypothesis shows that the initiation and the remanent of magnetic possessions govern the means processes of DNA replication and the shortening of the telomere. Each paternal DNA strand has a solenoid-like arrangement that forms at the beginning of the copy process. This formation admits an electric charge shift via the string to create a magnetic field of currents. A remanent magnetization caused apiece magnetic field causes the encircling medium to produce a new (replicated) filament. Through this magnetization process, the replicated rope possesses a related information pattern to that of the fatherly strand.Also, in this place process, the remanent amount of magnetization forms the medium in which it has less of two together repetitive and pattern magnetization than the fatherly strand. Then, the copied strand shows a abridgment in the number of the base pairs of the telomere.A magnetic field of all structure of the DNA particle encounters difficulty expected detected, even though some measurements have proved no net magnetic field.  As the operation of this establishment is to hamper the, (whole), DNA molecule from the acting in copy. Where, in this case, two together strands are existed prevented expected in continuously acted in replicated operation in every come into sight the nuclear. Then two together, the spliced and unravel of the strands are main to the DNA and to its copy.

Author(s) Details:

Adnan Y. Rojeab,
School of Electronic Engineering and Computer Science, Queen Mary University of London, UK.

Please see the link here: https://stm.bookpi.org/ARBS-V5/article/view/12535

Effect of the Zr-substitution on the Structural and Magnetic Properties of SmFe10Si2 System | Chapter 4 | Fundamental Research and Application of Physical Science Vol. 2

 Structural and magnetic characterization of melt-spun ribbons of Sm_1-xZr_xFe₁₀Si₂ (0.1 ≤ x ≤ 0.6) has been studied using X-ray diffraction and Mössbauer spectroscopy. The formation of the tetragonal ThMn₁₂-type structure has been observed in all alloys, without further annealing. Unit cell parameters are changing gradually with the incorporation of Zr; however, a and c parameters are affected in different degree due to the preference of Zr for RE atomic positions and thus the c/a ratio is increasing. The Curie temperature decreases linearly with Zr substitution from 595 K for x=0.1 to 668 K for x=0.6. The saturation magnetization does not change appreciably in the interval from x=0.1 (123.9 Am²/kg) to x=0.5 (126.0 Am²/kg), but then decreases to 94 Am²/kg for x=0.6. ⁵⁷Fe Mössbauer Spectroscopy on magnetically aligned samples revealed that Zr introduction affects magnetocrystalline anisotropy.

Author(s) Details:

M. Gjoka,
INN, NCSR Demokritos, Athens 15310, Greece.

C. Sarafidis,
School of Physics, Aristotle University of Thessaloniki, Thessaloniki-54124, Greece.

V. Psycharis,
INN, NCSR Demokritos, Athens 15310, Greece.

E. Devlin,
INN, NCSR Demokritos, Athens 15310, Greece.

D. Niarchos,
INN, NCSR Demokritos, Athens 15310, Greece and AMEN New Technologies, Athens, Greece.

G. Hadjipanayis,
Department of Physics, U of Delaware, Newark, USA.

Please see the link here: https://stm.bookpi.org/FRAPS-V2/article/view/10146

Ion Irradiation Effect on Structure and Magnetic Properties of Multilayer Fe/Si | Book Publisher International

 This book was written in the hopes that readers, particularly young researchers and students, would be able to learn more about how Argon ion irradiation affects multilayer thin film systems, with a focus on Fe/Si metal-semiconductor systems, and how it is linked to magnetoresistance (MR) properties. This issue is significant because it covers the phenomena of physical characteristics, which are crucial in comprehending MR phenomena at the nanoscale scale. The Helicon Sputering technique is used to create thin films with thicknesses in the nanoscale range, a technology that allows for extremely precise film creation. Furthermore, it can be demonstrated that ion irradiation has an effect on MR characteristics, which can be linked to the interfacial structure between the Fe and Si layers. Several characterization techniques, such as Conversion Electron Mossbauer Spectroscopy (CEMS), Rutherford Back Scattering (RBS), and confirmation with Vibrating Sample Magnetometer(VSM) and Four Point Probe(FPP) for the magnetic and MR properties of post-irradiated thin film systems, can clarify this effect. This book can add to our understanding of how ion irradiation alters the physical properties of thin films and reduces the sensitivity of thin-film sensors like magnetic sensors.

The book is divided into five chapters, the first of which is an introduction to the current state of research on the GMR phenomena in multilayer Fe/Cr and Fe/Si. In Chapter 2, we discussed the basic theory of GMR in multilayer and exchange interactions, as well as the synthesis process of Helicon plasma Sputtering. In Chapter 3, we discussed the materials, synthesis methods, and characterization of multilayer films. In Chapter 4, we went through the pre-irradiation and post-irradiation of Argon ions in relation to the Fe/Si multilayer and its structure model in great depth. The conclusion concerning the influence of ion irradiation on the structure and magnetic characteristics of multilayer Fe/Si is found in Chapter 5.

Author(s) Details

Setyo Purwanto
National Agency for Research and Innovation (BRIN), Puspiptek, Serpong 15314, Tangerang Selatan, Banten Provence, Indonesia.

View Book:- https://stm.bookpi.org/IIESMPM/article/view/5944

Studies on Superparamagnetic Behavior of CoFeO/rGO Nanocomposites at Different Temperatures | Chapter 2 | Challenges and Advances in Chemical Science Vol. 5

The source of magnetism is linked to electron spin and orbital motions, as well as how electrons interact with one another. Magnetic nanoparticles have gotten a lot of attention because of their unique features that set them apart from bulk materials. As a result, they can be employed to create novel materials and gadgets. Superparamagnetism is one of the explicit features of magnetic nanoparticles. Reduced graphene oxide (rGO), for example, is a two-dimensional (2D) nanosheet with unique features such as high mobility, chemical activity, good optical transparency, and a large active surface area. Because of these significant features, this material is an excellent candidate for nanocomposites including magnetic nanoparticles such as cobalt ferrite (CoFe2O4). Nanosheets decorated with CoFe2O4 nanoparticles on rGO will have the required magnetic property, making the nanocomposites promising in a range of domains. The features, general methods of preparation, and some characteristics of CoFe2O4/rGO nanocomposites that can be used in a variety of applications are discussed in this chapter.

Author (S) Details

Amodini Mishra

School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India and Material Science Programme, Indian Institute of Technology Kanpur, Kanpur, U.P.-208016, India.

View Book :- https://stm.bookpi.org/CACS-V5/article/view/3890

Structural Characterization and Magnetic Properties of Undoped and Ti-Doped ZnO Nanoparticles Prepared by Modified Oxalate Route: An Advance Study | Chapter 3 | Current Perspectives on Chemical Sciences Vol. 11

 Averrhoa carambola fruit juice was used as a natural source of oxalate in the preparation of ti-doped zinc oxide and pure zinc oxide nanoparticles via a modified oxalate route. FTIR, TGA, and XRD were used to investigate the properties of the precursors. The investigation revealed that the precursors are zinc oxalate and Ti-doped zinc oxalate, which readily decompose at room temperature. 450°C. The as-prepared precursors were calcined for 4 hours at 450°C, and the decomposition products were characterized using XRD, SEM, EDX, and VSM. Using the Debye-Scherrer equation, XRD results revealed crystallinity with hexagonal wurtzite structure, and the average grain size was found to be 26 nm for Ti-doped ZnO and 29 nm for ZnO. Furthermore, SEM morphological studies revealed particle agglomeration, while EDS analysis revealed the presence of Ti3+ in the zinc oxide lattice. Finally, the hysteresis loop from the VSM results demonstrates that Tidoped ZnO is ferromagnetic. The expected metal oxalates were identified as the precursors, and the decomposition products were pure ferromagnetic nanoparticles.

Author (s) Details

Ekane Peter Etape
Department of Chemistry, Faculty of Science, University of Buea, P.O.Box 63, Buea, Cameroon

Josepha Foba-Tendo
Department of Chemistry, Faculty of Science, University of Buea, P.O.Box 63, Buea, Cameroon.

Lambi John Ngolui
Department of Chemistry, ENS Yaound´e, BP 47, Yaound´e, Cameroon.

Beckley Victorine Namondo
Department of Chemistry, Faculty of Science, University of Buea, P.O.Box 63, Buea, Cameroon.

Fomogne Cyrille Yollande
Department of Chemistry, Faculty of Science, University of Buea, P.O.Box 63, Buea, Cameroon.

Marius Borel Nguefack Nguimezong
Department of Chemistry, Faculty of Science, University of Buea, P.O.Box 63, Buea, Cameroon.

View Book :- https://stm.bookpi.org/CPCS-V11/article/view/1572

Investigation the Effect of Composition and Annealing on Electrodeposited CoxPt1- X Nanowires | Chapter 5 | Newest Updates in Physical Science Research Vol. 5

 By electrodepositioning highly ordered CoxPt1-x (x 0.82) magnetic nanowire arrays of 60 nm diameter into the pores of anodic aluminium oxide (AAO) templates, highly ordered CoxPt1-x (x 0.82) magnetic nanowire arrays of 60 nm diameter have been effectively produced. The electrodeposition approach was chosen because it is one of the most simple, cost-effective, and easy-to-control nanowire-making processes. Deposition potential was discovered to be an important component in controlling the composition and consequently the magnetic characteristics of nanowires. XRD analysis revealed that the as-deposited CoxPt1- x nanowires have a fcc structure with a preferred orientation of (111) or (001) along the nanowire. In contrast to the near superparamagnetic response of Pt-rich nanowires, Co-rich nanowires exhibit ferromagnetic behaviour. Because of the rise in magnetocrystalline anisotropy perpendicular to the wire axis, the effects of crystallisation cause a decrease in anisotropy along the wire axis for Co82Pt18 nanowires after annealing. Within the AAO template, segmented CoPtP/Pt multilayer nanowires are deposited in the next step of our research. Due to the creation of an ordered Co-Pt alloy phase at the interface, such multilayer nanowires are expected to have a significant anisotropy. We discovered that the deposition potential is a significant component in influencing the structure and, as a result, the magnetic characteristics of nanowires.

Author (s) Details

Manvendra Singh Khatri
Department of Physics, National Institute of Technology Uttarakhand, Srinagar Garhwal, 246174, India.

Shivani Agarwal
Department of Physics, National Institute of Technology Uttarakhand, Srinagar Garhwal, 246174, India.

Jen-Hwa Hsu
Institute of Applied Physics & Center for Nanostorage Research, National Taiwan Unviersity, Taipei, 106, Taiwan.

Chia-Hua Chien
Institute of Physics & Nanomaterial and Low temperature Physics laboratory, Academia Sinica, Taipei 11529, Taiwan.

Cheng-Lung Chen
Institute of Physics & Nanomaterial and Low temperature Physics laboratory, Academia Sinica, Taipei 11529, Taiwan.

Yang-Yuan Chen
Institute of Physics & Nanomaterial and Low temperature Physics laboratory, Academia Sinica, Taipei 11529, Taiwan.

View Book :- https://stm.bookpi.org/NUPSR-V5/article/view/1400