The magnetocaloric effect of superfine magnets

Korolev, V. V.; Arefyev, I. M.; Ramazanova, A. G.

doi:10.1007/s10973-008-9018-y

Cited by 13 publications

(10 citation statements)

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“…6) and (Fig. 6) in accordance with literature data [3,4,6,[23][24][25]. The XRD attributions confirmed the results found in the TG/DTG analyses.…”

Section: Thermogravimetric Characterization Of the Fe X Das 2x Complexessupporting

confidence: 89%

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Complexation of the Fe(III) and Fe(II) sulphates with diphenyl-4-amine barium sulphonate (DAS) Synthesis, thermogravimetric and spectroscopic studies

Machado¹,

Marins²,

Muri³

et al. 2009

J Therm Anal Calorim

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“…6) and (Fig. 6) in accordance with literature data [3,4,6,[23][24][25]. The XRD attributions confirmed the results found in the TG/DTG analyses.…”

Section: Thermogravimetric Characterization Of the Fe X Das 2x Complexessupporting

confidence: 89%

“…(inverted spinel) or by a mixture of Fe 2? and Fe 3? , depending on the conditions of treatment of the sample [3,19,25].…”

Section: Thermogravimetric Characterization Of the Fe X Das 2x Complexesmentioning

confidence: 99%

Complexation of the Fe(III) and Fe(II) sulphates with diphenyl-4-amine barium sulphonate (DAS) Synthesis, thermogravimetric and spectroscopic studies

Machado¹,

Marins²,

Muri³

et al. 2009

J Therm Anal Calorim

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“…Earlier we have observed similar maxima for high disperse particles with ferrimagnetic and ferromagnetic structures. [13][14][15] It is difficult to give an interpretation of the maximum at the present stage of the study.…”

Section: Resultsmentioning

confidence: 94%

Regularities of Magnetocaloric Effect and Determination of Some Thermodynamic Parameters for (Octaethylporphynato)chloro-manganese(III)

Korolev¹,

Klyueva²,

Arefyev³

et al. 2008

MHC

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chloromanganese(III) (6% suspension in water) were measured by microcalorimetric method in the dependence of temperature (298-353 K) and magnetic field (0-0.7 T). It is found that the MCE has positive value which increases with growth of the magnetic field induction at all the temperatures and decreases with the temperature growth at all the magnetic fields. Breaking the magnetic field leads to adiabatic demagnetizing. The dependence of specific heat capacity of the studied system from the value of magnetic field induction has maximum at 0.2-0.3 T at all the temperatures. When the induction value is higher than 0.6 T the specific heat capacity value is less than that in zero field. The temperature growth leads to the increase of the specific heat capacity in all the magnetic fields. On the base of the experimental data on the magnetocaloric effect and specific heat capacity of the manganese complex the dependencies of enthalpy, of the magnetic components of molar heat capacity and entropy from the temperature and magnetic induction are calculated.

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“…Here too we find that a mechanism enabling interchange between the a system's environmental temperature and its own entropy is provided by the (anistropic) magnetocaloric effect (MCE) [159], which is the property of some magnetic materials to heat up when placed in an H-field and cool down when they are removed (adiabatic). In fact, the heat capacity at the nano-scale turns out to be a fewfold higher than that of bulk systems, thanks to MCE [78]. We have suggested [104] that the exit of the "magnetic ancestor" from the confines of its magnetic environment may have been enabled upon coupling of its envisaged dynamics associated with changes in gradient of flux lines, instead with ATP-the universal biological currency (see Sect.…”

Section: The Potential For a Quantum-leap To Lifementioning

confidence: 99%

The Legacy of Alladi Ramakrishnan in the Mathematical Sciences

Alladi¹,

Klauder²,

Rao³

2010

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), except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.Cover illustration: Photo of Alladi Ramakrishnan courtesy of Krishnaswami Alladi.Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com) PrefaceAlladi Ramakrishnan (1923Ramakrishnan ( -2008 was an eminent scientist who had a wide range of research interests in theoretical and mathematical physics. Professor Ramakrishnan made significant contributions to probability and statistics, elementary particle physics, cosmic rays and astrophysics, matrix theory, and the special theory of relativity. Ramakrishnan believed strongly that in addition to doing fundamental research, one must contribute to the advancement of the profession. Inspired by his visit to the Institute for Advanced Study in Princeton in [1957][1958], he returned to Madras and began the Theoretical Physics Seminar at his family home Ekamra Nivas. These seminars were ultimately responsible for the creation of MATSCIENCE, The Institute of Mathematical Sciences in 1962. This institute, of which he was the Director for its first 21 years, has grown steadily in size and stature, and is his monumental contribution to the profession. In a distinguished scientific life that has spanned more than five decades, Professor Ramakrishnan has come into close contact with, and was influenced by, several eminent mathematicians and physicists, and has moulded the careers of his several students and young researchers. This volume, which is a tribute to his great legacy, not only deals with his significant contributions to research and the profession, but also contains a fine collection of research and survey papers by leading physicists and mathematicians that cover a broad range of areas in the mathematical sciences.The first part of this volume is about Professor Alladi Ramakrishnan and his contributions. The book begins with an article entitled "Contributions of Alladi Ramakrishnan to the Mathematical Sciences" in which the remarkable career and contributions of Ramakrishnan are described by his son Krishnaswami Alladi who was very close to his father and accompanied Professor Ramakrishnan regularly on his worldwide scientific trips. Included in Krishna's article is a description of Ramakrishnan's visit to the Institute for Advanced Study in Princeton in [1957][1958], and the subsequent exciting series of events in Madras which led to the creation of MATSCIENCE. This is immediately followed by an article on Alladi Ramakrishnan's (now famous) Theoretical Physics Seminar. The list of eminent speakers at the seminar and the...

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The magnetocaloric effect of superfine magnets

Cited by 13 publications

References 1 publication

Complexation of the Fe(III) and Fe(II) sulphates with diphenyl-4-amine barium sulphonate (DAS) Synthesis, thermogravimetric and spectroscopic studies

Complexation of the Fe(III) and Fe(II) sulphates with diphenyl-4-amine barium sulphonate (DAS) Synthesis, thermogravimetric and spectroscopic studies

Regularities of Magnetocaloric Effect and Determination of Some Thermodynamic Parameters for (Octaethylporphynato)chloro-manganese(III)

The Legacy of Alladi Ramakrishnan in the Mathematical Sciences

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