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Pressure effect on magnetic properties of gadolinium in paramagnetic state

Pressure effect on magnetic properties of gadolinium in paramagnetic state

In this report we are mostly focused on refinement of the experimental dependence of the magnetic transition temperature TC on pressure under pure hydrostatic (gaseous) conditions. Unlike previously used methods, we employed a new procedure, based on the measurement of pressure effect on the dc magn...

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Main Authors: Panfilov, A.S., Grechnev, G.E., Logosha, A.V., Zhuravleva, I.P.
Format: Article
Language:English
Published: Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України 2013
Series:Физика и техника высоких давлений
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/69601
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spelling irk-123456789-696012014-10-18T03:01:17Z Pressure effect on magnetic properties of gadolinium in paramagnetic state Panfilov, A.S. Grechnev, G.E. Logosha, A.V. Zhuravleva, I.P. In this report we are mostly focused on refinement of the experimental dependence of the magnetic transition temperature TC on pressure under pure hydrostatic (gaseous) conditions. Unlike previously used methods, we employed a new procedure, based on the measurement of pressure effect on the dc magnetic susceptibility of Gd in the paramagnetic state at temperatures above TC. The dc paramagnetic susceptibility of Gd was measured in the temperature range of 295−365 K and under hydrostatic pressure up to 0.16 GPa, yielding values of the paramagnetic Curie temperature Θ and its pressure derivative. Also we explored a possibility to describe pressure effects on magnetism of Gd within simple mean-field approaches, which are based on ab initio electronic structure calculations. Based on the results of electronic structure calculations within the density functional theory, the experimental behavior of Θ under pressure was described in the framework of mean-field like approach. Проведены измерения парамагнитной восприимчивости Gd в интервале температур 295−365 K в условиях гидростатического сжатия до 0.16 GPa, что позволило получить значения парамагнитной температуры Кюри Θ и ее производной по давлению. Основываясь на результатах расчетов электронной структуры с использованием теории функционала плотности, было исследовано поведение Θ под давлением в рамках теории среднего поля. С этой целью были вычислены эффективная восприимчивость зонных d-электронов и соответствующие обменные интегралы как функции параметров решетки. Було виміряно парамагнітну сприйнятливість Gd в інтервалі температур 295−365 K в умовах гідростатичного тиску до 0.16 GPa, що дозволило отримати значення парамагнітної температури Кюрі Θ та її похідної за тиском. На основі результатів розрахунків електронної структури з використанням теорії функціонала густини було досліджено поведінку Θ під тиском у рамках теорії середнього поля. З цією метою були обчислені ефективна сприйнятливість зонних d-станів і відповідні обмінні інтеграли як функції параметрів ґратки. 2013 Article Pressure effect on magnetic properties of gadolinium in paramagnetic state / A.S. Panfilov, G.E. Grechnev, A.V. Logosha, I.P. Zhuravleva // Физика и техника высоких давлений. — 2013. — Т. 23, № 1. — С. 5-12. — Бібліогр.: 22 назв. — англ. 0868-5924 PACS: 71.20.Eh, 75.10.Lp, 75.30.Cr, 75.50.Cc, 75.80.+q http://dspace.nbuv.gov.ua/handle/123456789/69601 en Физика и техника высоких давлений Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description In this report we are mostly focused on refinement of the experimental dependence of the magnetic transition temperature TC on pressure under pure hydrostatic (gaseous) conditions. Unlike previously used methods, we employed a new procedure, based on the measurement of pressure effect on the dc magnetic susceptibility of Gd in the paramagnetic state at temperatures above TC. The dc paramagnetic susceptibility of Gd was measured in the temperature range of 295−365 K and under hydrostatic pressure up to 0.16 GPa, yielding values of the paramagnetic Curie temperature Θ and its pressure derivative. Also we explored a possibility to describe pressure effects on magnetism of Gd within simple mean-field approaches, which are based on ab initio electronic structure calculations. Based on the results of electronic structure calculations within the density functional theory, the experimental behavior of Θ under pressure was described in the framework of mean-field like approach.
format Article
author Panfilov, A.S.
Grechnev, G.E.
Logosha, A.V.
Zhuravleva, I.P.
spellingShingle Panfilov, A.S.
Grechnev, G.E.
Logosha, A.V.
Zhuravleva, I.P.
Pressure effect on magnetic properties of gadolinium in paramagnetic state
Физика и техника высоких давлений
author_facet Panfilov, A.S.
Grechnev, G.E.
Logosha, A.V.
Zhuravleva, I.P.
author_sort Panfilov, A.S.
title Pressure effect on magnetic properties of gadolinium in paramagnetic state
title_short Pressure effect on magnetic properties of gadolinium in paramagnetic state
title_full Pressure effect on magnetic properties of gadolinium in paramagnetic state
title_fullStr Pressure effect on magnetic properties of gadolinium in paramagnetic state
title_full_unstemmed Pressure effect on magnetic properties of gadolinium in paramagnetic state
title_sort pressure effect on magnetic properties of gadolinium in paramagnetic state
publisher Донецький фізико-технічний інститут ім. О.О. Галкіна НАН України
publishDate 2013
url http://dspace.nbuv.gov.ua/handle/123456789/69601
citation_txt Pressure effect on magnetic properties of gadolinium in paramagnetic state / A.S. Panfilov, G.E. Grechnev, A.V. Logosha, I.P. Zhuravleva // Физика и техника высоких давлений. — 2013. — Т. 23, № 1. — С. 5-12. — Бібліогр.: 22 назв. — англ.
series Физика и техника высоких давлений
work_keys_str_mv AT panfilovas pressureeffectonmagneticpropertiesofgadoliniuminparamagneticstate
AT grechnevge pressureeffectonmagneticpropertiesofgadoliniuminparamagneticstate
AT logoshaav pressureeffectonmagneticpropertiesofgadoliniuminparamagneticstate
AT zhuravlevaip pressureeffectonmagneticpropertiesofgadoliniuminparamagneticstate
first_indexed 2023-10-18T18:56:51Z
last_indexed 2023-10-18T18:56:51Z
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