Magnetism in Na-filled Fe-based Skutterudites

Magnetism in Na-filled Fe-based Skutterudites PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The interplay of superconductivity and magnetism is a subject of ongoing interest, stimulated most recently by the discovery of Fe-based superconductivity and the recognition that spin-fluctuations near a magnetic quantum critical point may provide an explanation for the superconductivity and the order parameter. We investigate magnetism in the Na filled Fe-based skutterudites using first principles calculations. NaFe4Sb12 is a known ferromagnet near a quantum critical point. We find a ferromagnetic metallic state for this compound driven by a Stoner type instability, consistent with prior work. In accord with prior work, the magnetization is overestimated, as expected for a material near an itinerant ferromagnetic quantum critical point. NaFe4P12 also shows a ferromagnetic instability at the density functional level, but this instability is much weaker than that of NaFe4Sb12, possibly placing it on the paramagnetic side of the quantum critical point. NaFe4As12 shows intermediate behavior. We also present results for skutterudite FeSb3, which is a metastable phase that has been reported in thin film form.

Magnetism in Na-filled Fe-based Skutterudites

Magnetism in Na-filled Fe-based Skutterudites PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The interplay of superconductivity and magnetism is a subject of ongoing interest, stimulated most recently by the discovery of Fe-based superconductivity and the recognition that spin-fluctuations near a magnetic quantum critical point may provide an explanation for the superconductivity and the order parameter. We investigate magnetism in the Na filled Fe-based skutterudites using first principles calculations. NaFe4Sb12 is a known ferromagnet near a quantum critical point. We find a ferromagnetic metallic state for this compound driven by a Stoner type instability, consistent with prior work. In accord with prior work, the magnetization is overestimated, as expected for a material near an itinerant ferromagnetic quantum critical point. NaFe4P12 also shows a ferromagnetic instability at the density functional level, but this instability is much weaker than that of NaFe4Sb12, possibly placing it on the paramagnetic side of the quantum critical point. NaFe4As12 shows intermediate behavior. We also present results for skutterudite FeSb3, which is a metastable phase that has been reported in thin film form.

Superconductivity and Magnetism in Skutterudites

Superconductivity and Magnetism in Skutterudites PDF Author: Ctirad Uher
Publisher: CRC Press
ISBN: 1000513807
Category : Science
Languages : en
Pages : 418

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Book Description
Superconductivity and Magnetism in Skutterudites discusses superconducting and magnetic properties of a class of materials called skutterudites. With a brief introduction of the fundamental structural features of skutterudites, the book then provides a detailed assessment of the superconducting and magnetic properties, focusing particularly on the rare earth-filled skutterudites where a plethora of fascinating properties and ground states is realized due to interactions of the filler species with the framework ions. Such interactions underpin the exciting forms of superconductivity and magnetism, most notably realized in the exotic heavy fermion superconductor of composition PrOs4Sb12. The two main topics of superconductivity and magnetism are provided with a concise introduction of superconducting and magnetic properties so that a reader can appreciate and understand the main arguments in the text. This book would appeal to graduate students, postdoctoral students, and anyone interested in superconducting and magnetic properties of a large family of minerals called skutterudites. Key Features: • Gives a thorough account of the superconducting and magnetic properties of skutterudites. • Each topic is accompanied by introductory sections to assist in the understanding of the text. • Supported by numerous figures and all key references.

Alloys and Intermetallic Compounds

Alloys and Intermetallic Compounds PDF Author: Cristina Artini
Publisher: CRC Press
ISBN: 1498741444
Category : Science
Languages : en
Pages : 368

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Book Description
This book focuses on the role of modeling in the design of alloys and intermetallic compounds. It includes an introduction to the most important and most used modeling techniques, such as CALPHAD and ab-initio methods, as well as a section devoted to the latest developments in applications of alloys. The book emphasizes the correlation between modeling and technological developments while discussing topics such as wettability of Ultra High Temperature Ceramics by metals, active brazing of diamonds to metals in cutting tools, surface issues in medicine, novel Fe-based superconductors, metallic glasses, high entropy alloys, and thermoelectric materials.

Handbook of Magnetic Materials

Handbook of Magnetic Materials PDF Author: K.H.J. Buschow
Publisher: Elsevier
ISBN: 008091506X
Category : Science
Languages : en
Pages : 473

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Book Description
Volume 18 of the Handbook of Magnetic Materials, as the preceding volumes, has a dual purpose. As a textbook it is intended to help those who wish to be introduced to a given topic in the field of magnetism without the need to read the vast amount of literature published. As a work of reference it is intended for scientists active in magnetism research. To this dual purpose, Volume 18 is composed of topical review articles written by leading authorities. In each of these articles an extensive description is given in graphical as well as in tabular form, much emphasis being placed on the discussion of the experimental material in the framework of physics, chemistry and material science. It provides readers with novel trends and achievements in magnetism. Composed of topical review articles written by leading authorities Intended to be of assistance to those who wish to be introduced to a given topic in the field of magnetism As a work of reference it is intended for scientists active in magnetism research Provide the readership with novel trends and achievements in magnetism

Thermoelectric Skutterudites

Thermoelectric Skutterudites PDF Author: Ctirad Uher
Publisher: CRC Press
ISBN: 1000367193
Category : Science
Languages : en
Pages : 339

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Book Description
• Gives a comprehensive account of all fundamental physical properties of skutterudites. • Each major topic is accompanied by introductory sections and further detailed theoretical treatment is provided in Appendices. • Supported by many figures and a vast number of relevant references.

Modern Mössbauer Spectroscopy

Modern Mössbauer Spectroscopy PDF Author: Yutaka Yoshida
Publisher: Springer Nature
ISBN: 9811594228
Category : Science
Languages : en
Pages : 533

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Book Description
This book presents an overview of the latest Mössbauer spectroscopy research. It sheds light on various cutting-edge research subjects: (i) nuclear resonance scattering experiments implemented at synchrotron radiation facilities, e.g., ESRF, DESY and Spring-8; (ii) multidisciplinary materials research related to chemistry, biology, geoscience, molecular magnetism of metal complexes, batteries, and magnetism; (iii) novel imaging techniques based on probing diffusion in solids using Mössbauer spectroscopy. The first three chapters introduce recent research on modern Mössbauer spectroscopy, including nuclear resonant scattering experiments and development of related techniques at synchrotron accelerator facilities. Chapters 4 and 5 then demonstrate the applications of such pioneering techniques to chemistry, biology and geoscience. Chapters 6 and 7 describe the applications to new functional materials, i.e., metal complexes and Li- and Na-ion batteries, while the final two chapters are devoted to two important measuring techniques: Mössbauer spectroscopy under external magnetic fields, and microscopic Mössbauer techniques on diffusion in solids, which are expected to play an essential role in the investigation and characterization of magnetic structures and microstructures in materials. The cutting-edge content provides readers with quick updates on the latest research topics in the field, while the tutorial-style descriptions allow readers unfamiliar with Mössbauer spectroscopy to learn and implement the techniques. As such, the book is especially useful for advanced undergraduate and early graduate students who have recently been assigned to a laboratory.

Journal of the Physical Society of Japan

Journal of the Physical Society of Japan PDF Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 408

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Book Description


Proceedings of the International Conference on Strongly Correlated Electrons with Orbital Degrees of Freedom (ORBITAL2001)

Proceedings of the International Conference on Strongly Correlated Electrons with Orbital Degrees of Freedom (ORBITAL2001) PDF Author: Kazuma Hirota
Publisher:
ISBN:
Category : Atomic orbitals
Languages : en
Pages : 388

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Book Description


Annual Reports on NMR Spectroscopy

Annual Reports on NMR Spectroscopy PDF Author:
Publisher: Academic Press
ISBN: 0128121874
Category : Science
Languages : en
Pages : 438

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Book Description
Annual Reports on NMR Spectroscopy, Volume 92 provides a thorough and in-depth accounting of progress in nuclear magnetic resonance (NMR) spectroscopy and its many applications. Topics presented include new chapters on The DEPT Experiment and Some of Its Useful Variants, NMR Studies of Organic Aerosols, Recent NMR Studies of Thermoelectric Materials, Nonlinear Effects in NMR, Applications of Solid-State 43 Ca Nuclear Magnetic Resonance: Superconductors, Glasses, Biomaterials, and NMR Crystallography, and Solid-State NMR Spectroscopy: The Magic Wand to View Bone at Nanoscopic Resolution. This book has established itself as a premier means for both specialists and non-specialists who are looking to become familiar with new techniques and applications pertaining to NMR spectroscopy. Serves as the premier resource for learning the new techniques and applications of NMR spectroscopy Provides a key reference for chemists and physicists using NMR spectroscopy to study the structure and dynamics of molecules Covers all aspects of molecular science, including MRI (Magnetic Resonance Imaging)

Comprehensive Inorganic Chemistry II

Comprehensive Inorganic Chemistry II PDF Author:
Publisher: Newnes
ISBN: 0080965296
Category : Science
Languages : en
Pages : 7694

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Book Description
Comprehensive Inorganic Chemistry II, Nine Volume Set reviews and examines topics of relevance to today’s inorganic chemists. Covering more interdisciplinary and high impact areas, Comprehensive Inorganic Chemistry II includes biological inorganic chemistry, solid state chemistry, materials chemistry, and nanoscience. The work is designed to follow on, with a different viewpoint and format, from our 1973 work, Comprehensive Inorganic Chemistry, edited by Bailar, Emeléus, Nyholm, and Trotman-Dickenson, which has received over 2,000 citations. The new work will also complement other recent Elsevier works in this area, Comprehensive Coordination Chemistry and Comprehensive Organometallic Chemistry, to form a trio of works covering the whole of modern inorganic chemistry. Chapters are designed to provide a valuable, long-standing scientific resource for both advanced students new to an area and researchers who need further background or answers to a particular problem on the elements, their compounds, or applications. Chapters are written by teams of leading experts, under the guidance of the Volume Editors and the Editors-in-Chief. The articles are written at a level that allows undergraduate students to understand the material, while providing active researchers with a ready reference resource for information in the field. The chapters will not provide basic data on the elements, which is available from many sources (and the original work), but instead concentrate on applications of the elements and their compounds. Provides a comprehensive review which serves to put many advances in perspective and allows the reader to make connections to related fields, such as: biological inorganic chemistry, materials chemistry, solid state chemistry and nanoscience Inorganic chemistry is rapidly developing, which brings about the need for a reference resource such as this that summarise recent developments and simultaneously provide background information Forms the new definitive source for researchers interested in elements and their applications; completely replacing the highly cited first edition, which published in 1973