Download or read book Antiferromagnetic to Weakferromagnetic Transition and the Temperature Dependence of the Transverse Susceptibility in Hematite Below the Morin Transition written by G. Cinader and published by . This book was released on 1966 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The antiferromagnetic (AF) to weak ferromagnetic (WF) transition in hematite below the Morin transition induced by an applied magnetic field in the basal plane, was studied experimentally and theoretically. Assuming that the single ion anisotropy is given by K sin squared theta the transition was found to occur by a gradual rotation of the AF axis, from the trigonal axis to the basal plane. This behaviour explains the reported increase of the perpendicular susceptibility with increasing temperature below the Morin transition point. (Author).

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Laboratories Annual Report written by Israel. Ṿaʻadah le-energyah aṭomit and published by . This book was released on 1966 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canted Antiferromagnetism Hematite written by Allan H Morrish and published by World Scientific. This book was released on 1995-01-16 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hematite (α-Fe2O3), the stable oxide of iron, is a major constituent of soils, rocks and the earth's crust. It has unique magnetic properties that make it the prototype for the class of materials known as canted antiferromagnets.This book has no equivalent. The mean-field theory is treated in detail, and thus the book is a useful text for students mastering this general method. Information obtained by a wide variety of experimental methods is provided. These techniques include x-ray and neutron diffraction; electron magnetic resonance; Mössbauer spectroscopy; and thermal, optical, electrical and elastic measurements.

Download or read book Scientific Activities written by Mekhon Ṿaitsman le-madaʻ and published by . This book was released on 1965 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A S M Review of Metal Literature written by American Society for Metals and published by . This book was released on 1967 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physica B C written by and published by . This book was released on 1977 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Morin Transition in Hematite a Fe2O3 Nanoparticles by M ssbauer Spectroscopy written by Sajib Halder and published by . This book was released on 2020 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The change in magnetic properties of hematite (a- Fe2O3) nanoparticles were investigated by observing the change of Morin transition fraction at different temperatures. X-ray diffraction, transimission electron microscope (TEM), vibrating sample magnetometer (VSM), and Mössbauer spectroscopy techniques applied to study the magnetic and structural properties of the sample. According to the XRD results the sample has a double phases with dominant hematite (a- Fe2O3) phase. The TEM analysis confirmed the prepared nanoparticles have a large size distribution with average diameter less than 20 nm. The Morin transition temperature of the sample was measured by both the magnetization measurements and Mössbauer study. The zero-field cooled (ZFC) and field-cooled (FC) magnetization measurements show the particles undergo a magnetic phase transition from a weakly ferromagnetic to antiferromagnetic phase at 250 K. Room temperature Mössbauer spectra show the superparamagnetic behavior of the materials where the magnetic moment fluctuates in all directions. Morin transition started just below (285 K) the room temperature. The Morin transition was found strongly temperature dependent and increased constantly with decreasing temperature. The magnetic and structural changes with changing the Morin transition fraction revealed important characterisitics about the sample. The Mössbauer spectra recorded at 140 K and below showed complete Morin transition, which indicates the materials are strongly antiferromagnetic. The average hyperfine magnetic field and isomer shift have similar relationship and both continuously increased with decreasing temperature. The weighted average Morin transition temperature for the sample obtained from Mössbauer studies is 265 15:8 K which is higher than the Morin transition found from the magnetization measurements (250 K) measured by VSM.

Download or read book Fizika tverdogo tela written by and published by . This book was released on 1980 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature and Field Dependence of the Weak Ferromagnetic Moment of Hematite written by Geoffrey W. Dean and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soviet Physics JETP written by and published by . This book was released on 1987 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature and Field Dependence of the Weak Ferromagnetic Moment of Hematite microfilm written by Graeme William Dean and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature and Field Dependence of the Weak Ferromagnetic Moment of Hematite microform written by Dean, Geoffrey W and published by National Library of Canada. This book was released on 1970 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1987 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spin Current written by Sadamichi Maekawa and published by Oxford University Press. This book was released on 2017 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a new branch of physics and technology, called spin-electronics or spintronics, the flow of electrical charge (usual current) as well as the flow of electron spin, the so-called "spin current", are manipulated and controlled together. This book is intended to provide an introduction and guide to the new physics and applications of spin current.

Download or read book Physical Properties of Nanorods written by Roman Krahne and published by Springer Science & Business Media. This book was released on 2013-06-12 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic nanoparticles are among the most investigated objects nowadays, both in fundamental science and in various technical applications. In this book the physical properties of nanowires formed by nanoparticles with elongated shape, i.e. rod-like or wire-like, are described. The transition in the physical properties is analyzed for nanorods and nanowires consisting of spherical and rod-like nanoparticles. The physical properties of nanowires and elongated inorganic nanoparticles are reviewed too. The optical, electrical, magnetic, mechanical and catalytic properties of nanowires consisting of semiconductors, noble and various other metals, metal oxides properties and metal alloys are presented. The applications of nanorods and nanowires are discussed in the book.

Download or read book Quantum Magnetism written by Ulrich Schollwöck and published by Springer. This book was released on 2008-05-14 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Closing a gap in the literature, this volume is intended both as an introductory text at postgraduate level and as a modern, comprehensive reference for researchers in the field. Provides a full working description of the main fundamental tools in the theorists toolbox which have proven themselves on the field of quantum magnetism in recent years. Concludes by focusing on the most important cuurent materials form an experimental viewpoint, thus linking back to the initial theoretical concepts.