Resurgence of ferromagnetic behavior coupled with Griffiths singularity in the electron doped La0.3Ca0.7MnO3 compound following the creation of oxygen deficiency
•Effect of oxygen vacancies on the physical properties of La0.3Ca0.7MnO3-δ oxides.•Lattice parameters and unit cell volume increase with oxygen deficiency increasing.•Appearance of paramagnetic –ferromagnetic transition for deficit samples.•Onset of the Griffiths phase for La0.3Ca0.7MnO2.8 La0.3Ca0....
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creator | Ameur, N. Triki, M. Hlil, E.K. |
description | •Effect of oxygen vacancies on the physical properties of La0.3Ca0.7MnO3-δ oxides.•Lattice parameters and unit cell volume increase with oxygen deficiency increasing.•Appearance of paramagnetic –ferromagnetic transition for deficit samples.•Onset of the Griffiths phase for La0.3Ca0.7MnO2.8 La0.3Ca0.7MnO2.85 samples.
We report the effect of the oxygen deficiency on the structural and magnetic properties of La0.3Ca0.7MnO3-δ (0 ≤ δ ≤ 0.2) perovskites. The parent compound (δ = 0) was prepared by the solid- state reaction. This sample was used to prepare the oxygen deficiency compounds using iron as oxygen absorber. The X-ray diffraction (XRD) data have been analyzed by the Rietveld method using the FullProf program. We have noticed that all samples crystallized in the orthorhombic structure with Pbnm space group. Magnetic measurements show that the parent compound La0.3Ca0.7MnO3 exhibits a paramagnetic behavior at high temperature and an antiferromagnetic state (AFM) coupled with charge ordering (CO) at low temperature. With oxygen deficiency a magnetic transition from paramagnetic (PM) to ferromagnetic (FM) state is fixed at decreasing temperature. The compound with δ = 0.15 exhibit a PM-FM transition when decreasing the temperature at TC = 191 K with persistence of the charge ordering state at low temperatures below 81 K. The compound with δ = 0.2 exhibit a PM-FM transition when the temperature decreases at TC = 134 K with vanishing of the CO state at low temperature. Further investigations of the magnetization measurements reveal features consistent with the appearance of Griffiths phase (GP) in the sample with δ = 0.15 and δ = 0.2 which proves the existence of ferromagnetic clusters in the paramagnetic domain below TG = 250 K and 234 K for δ = 0.15 and δ = 0.2 respectively. |
doi_str_mv | 10.1016/j.molstruc.2020.129039 |
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We report the effect of the oxygen deficiency on the structural and magnetic properties of La0.3Ca0.7MnO3-δ (0 ≤ δ ≤ 0.2) perovskites. The parent compound (δ = 0) was prepared by the solid- state reaction. This sample was used to prepare the oxygen deficiency compounds using iron as oxygen absorber. The X-ray diffraction (XRD) data have been analyzed by the Rietveld method using the FullProf program. We have noticed that all samples crystallized in the orthorhombic structure with Pbnm space group. Magnetic measurements show that the parent compound La0.3Ca0.7MnO3 exhibits a paramagnetic behavior at high temperature and an antiferromagnetic state (AFM) coupled with charge ordering (CO) at low temperature. With oxygen deficiency a magnetic transition from paramagnetic (PM) to ferromagnetic (FM) state is fixed at decreasing temperature. The compound with δ = 0.15 exhibit a PM-FM transition when decreasing the temperature at TC = 191 K with persistence of the charge ordering state at low temperatures below 81 K. The compound with δ = 0.2 exhibit a PM-FM transition when the temperature decreases at TC = 134 K with vanishing of the CO state at low temperature. Further investigations of the magnetization measurements reveal features consistent with the appearance of Griffiths phase (GP) in the sample with δ = 0.15 and δ = 0.2 which proves the existence of ferromagnetic clusters in the paramagnetic domain below TG = 250 K and 234 K for δ = 0.15 and δ = 0.2 respectively.</description><identifier>ISSN: 0022-2860</identifier><identifier>EISSN: 1872-8014</identifier><identifier>EISSN: 0022-2860</identifier><identifier>DOI: 10.1016/j.molstruc.2020.129039</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Charge ordering ; Condensed Matter ; Ferromagnetism ; Griffiths phase ; Materials Science ; Oxygen deficiency ; Physics</subject><ispartof>Journal of molecular structure, 2021-01, Vol.1224 (2), p.129039, Article 129039</ispartof><rights>2020 Elsevier B.V.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c293t-fd799f65267bf42092253f7628f9b497f2a8c9d7e8c0fe036099e19d3814b3f93</cites><orcidid>0000-0001-9262-3819 ; 0000-0001-7605-8784</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.molstruc.2020.129039$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://hal.science/hal-03619910$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Ameur, N.</creatorcontrib><creatorcontrib>Triki, M.</creatorcontrib><creatorcontrib>Hlil, E.K.</creatorcontrib><title>Resurgence of ferromagnetic behavior coupled with Griffiths singularity in the electron doped La0.3Ca0.7MnO3 compound following the creation of oxygen deficiency</title><title>Journal of molecular structure</title><description>•Effect of oxygen vacancies on the physical properties of La0.3Ca0.7MnO3-δ oxides.•Lattice parameters and unit cell volume increase with oxygen deficiency increasing.•Appearance of paramagnetic –ferromagnetic transition for deficit samples.•Onset of the Griffiths phase for La0.3Ca0.7MnO2.8 La0.3Ca0.7MnO2.85 samples.
We report the effect of the oxygen deficiency on the structural and magnetic properties of La0.3Ca0.7MnO3-δ (0 ≤ δ ≤ 0.2) perovskites. The parent compound (δ = 0) was prepared by the solid- state reaction. This sample was used to prepare the oxygen deficiency compounds using iron as oxygen absorber. The X-ray diffraction (XRD) data have been analyzed by the Rietveld method using the FullProf program. We have noticed that all samples crystallized in the orthorhombic structure with Pbnm space group. Magnetic measurements show that the parent compound La0.3Ca0.7MnO3 exhibits a paramagnetic behavior at high temperature and an antiferromagnetic state (AFM) coupled with charge ordering (CO) at low temperature. With oxygen deficiency a magnetic transition from paramagnetic (PM) to ferromagnetic (FM) state is fixed at decreasing temperature. The compound with δ = 0.15 exhibit a PM-FM transition when decreasing the temperature at TC = 191 K with persistence of the charge ordering state at low temperatures below 81 K. The compound with δ = 0.2 exhibit a PM-FM transition when the temperature decreases at TC = 134 K with vanishing of the CO state at low temperature. Further investigations of the magnetization measurements reveal features consistent with the appearance of Griffiths phase (GP) in the sample with δ = 0.15 and δ = 0.2 which proves the existence of ferromagnetic clusters in the paramagnetic domain below TG = 250 K and 234 K for δ = 0.15 and δ = 0.2 respectively.</description><subject>Charge ordering</subject><subject>Condensed Matter</subject><subject>Ferromagnetism</subject><subject>Griffiths phase</subject><subject>Materials Science</subject><subject>Oxygen deficiency</subject><subject>Physics</subject><issn>0022-2860</issn><issn>1872-8014</issn><issn>0022-2860</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkc9KAzEQxoMoWP-8guTqYeskqbubm1K0ChVB9BzSZNKmbDcl2a32cXxTU6tevWTCML-Pb-Yj5ILBkAErr5bDVWhSF3sz5MBzk0sQ8oAMWF3xogY2OiQDAM4LXpdwTE5SWgIAy_CAfL5g6uMcW4M0OOowxrDS8xY7b-gMF3rjQ6Qm9OsGLX333YJOoncufxJNvp33jY6-21Lf0m6BFBs0XQwttWGdgamGoRjnp3pqn0XWWa1D31rqQtOE94x_Qyai7nyGsoPwsc1uqEXnjc-2tmfkyOkm4flPPSVv93ev44di-jx5HN9OC8Ol6ApnKyldec3LauZGHCTn18JVJa-dnI1k5biujbQV1gYcgihBSmTSipqNZsJJcUou97oL3ah19Csdtyporx5up2rXywyTksGG5dlyP2tiSCmi-wMYqF0oaql-Q1G7UNQ-lAze7EHMm2w8RpW-t0TrYz6cssH_J_EF9_Sbeg</recordid><startdate>20210115</startdate><enddate>20210115</enddate><creator>Ameur, N.</creator><creator>Triki, M.</creator><creator>Hlil, E.K.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0001-9262-3819</orcidid><orcidid>https://orcid.org/0000-0001-7605-8784</orcidid></search><sort><creationdate>20210115</creationdate><title>Resurgence of ferromagnetic behavior coupled with Griffiths singularity in the electron doped La0.3Ca0.7MnO3 compound following the creation of oxygen deficiency</title><author>Ameur, N. ; Triki, M. ; Hlil, E.K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-fd799f65267bf42092253f7628f9b497f2a8c9d7e8c0fe036099e19d3814b3f93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Charge ordering</topic><topic>Condensed Matter</topic><topic>Ferromagnetism</topic><topic>Griffiths phase</topic><topic>Materials Science</topic><topic>Oxygen deficiency</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ameur, N.</creatorcontrib><creatorcontrib>Triki, M.</creatorcontrib><creatorcontrib>Hlil, E.K.</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Journal of molecular structure</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ameur, N.</au><au>Triki, M.</au><au>Hlil, E.K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Resurgence of ferromagnetic behavior coupled with Griffiths singularity in the electron doped La0.3Ca0.7MnO3 compound following the creation of oxygen deficiency</atitle><jtitle>Journal of molecular structure</jtitle><date>2021-01-15</date><risdate>2021</risdate><volume>1224</volume><issue>2</issue><spage>129039</spage><pages>129039-</pages><artnum>129039</artnum><issn>0022-2860</issn><eissn>1872-8014</eissn><eissn>0022-2860</eissn><abstract>•Effect of oxygen vacancies on the physical properties of La0.3Ca0.7MnO3-δ oxides.•Lattice parameters and unit cell volume increase with oxygen deficiency increasing.•Appearance of paramagnetic –ferromagnetic transition for deficit samples.•Onset of the Griffiths phase for La0.3Ca0.7MnO2.8 La0.3Ca0.7MnO2.85 samples.
We report the effect of the oxygen deficiency on the structural and magnetic properties of La0.3Ca0.7MnO3-δ (0 ≤ δ ≤ 0.2) perovskites. The parent compound (δ = 0) was prepared by the solid- state reaction. This sample was used to prepare the oxygen deficiency compounds using iron as oxygen absorber. The X-ray diffraction (XRD) data have been analyzed by the Rietveld method using the FullProf program. We have noticed that all samples crystallized in the orthorhombic structure with Pbnm space group. Magnetic measurements show that the parent compound La0.3Ca0.7MnO3 exhibits a paramagnetic behavior at high temperature and an antiferromagnetic state (AFM) coupled with charge ordering (CO) at low temperature. With oxygen deficiency a magnetic transition from paramagnetic (PM) to ferromagnetic (FM) state is fixed at decreasing temperature. The compound with δ = 0.15 exhibit a PM-FM transition when decreasing the temperature at TC = 191 K with persistence of the charge ordering state at low temperatures below 81 K. The compound with δ = 0.2 exhibit a PM-FM transition when the temperature decreases at TC = 134 K with vanishing of the CO state at low temperature. Further investigations of the magnetization measurements reveal features consistent with the appearance of Griffiths phase (GP) in the sample with δ = 0.15 and δ = 0.2 which proves the existence of ferromagnetic clusters in the paramagnetic domain below TG = 250 K and 234 K for δ = 0.15 and δ = 0.2 respectively.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.molstruc.2020.129039</doi><orcidid>https://orcid.org/0000-0001-9262-3819</orcidid><orcidid>https://orcid.org/0000-0001-7605-8784</orcidid></addata></record> |
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subjects | Charge ordering Condensed Matter Ferromagnetism Griffiths phase Materials Science Oxygen deficiency Physics |
title | Resurgence of ferromagnetic behavior coupled with Griffiths singularity in the electron doped La0.3Ca0.7MnO3 compound following the creation of oxygen deficiency |
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