Itinerant Ferromagnetism and Metamagnetism in Cr Doped Perovskite Ruthenates
We report results of structural, magnetic and transport properties of single crystal CaRu1-xCrxO3 (0≤x≤0.36) and SrRu1-xCrxO3 (0≤x≤0.30). Cr substitution as low as x=0.08 drives CaRu1-xCrxO3 from the paramagnetic state to an itinerant ferromagnetic state with field-driven first-order metamagnetic tr...
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| creator | Durairaj, V Elhami, E Chikara, S Lin, X. N Douglass, A Schlottmann, G. Cao P Choi, E. S Guertin, R. P |
| description | We report results of structural, magnetic and transport properties of single
crystal CaRu1-xCrxO3 (0≤x≤0.36) and SrRu1-xCrxO3
(0≤x≤0.30). Cr substitution as low as x=0.08 drives CaRu1-xCrxO3
from the paramagnetic state to an itinerant ferromagnetic state with
field-driven first-order metamagnetic transitions leading to a sizeable
saturation moment (~0.4B/f.u.within the ab plane). The ferromagnetism
occurs abruptly and reaches as high as TC=123 K for x=0.22. The Cr-driven
ferromagnetism is highly anisotropic, suggesting an important role for
spin-orbit coupling. Lattice constant and magnetic measurements strongly
support the valence of the Cr as tetravalent (Cr4+, 3d2 configuration). Cr
substitution for Ru in SrRuO3 (TC=165 K) enhances the itinerant ferromagnetism,
with TC reaching 290 K for x=0.30, consistent with Cr-induced ferromagnetism in
paramagnetic CaRuO3. Preliminary pressure-dependent magnetization of
CaRu0.85Cr0.15O3 shows strong enhancement of the saturation magnetization (25%
for P~0.7 GPa). All results indicate a coupling of Ru 4d and Cr 3d electrons
that is unexpectedly favorable for itinerant ferromagnetism which often exists
delicately in the ruthenates. |
| doi_str_mv | 10.48550/arxiv.cond-mat/0509084 |
| format | Article |
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crystal CaRu1-xCrxO3 (0≤x≤0.36) and SrRu1-xCrxO3
(0≤x≤0.30). Cr substitution as low as x=0.08 drives CaRu1-xCrxO3
from the paramagnetic state to an itinerant ferromagnetic state with
field-driven first-order metamagnetic transitions leading to a sizeable
saturation moment (~0.4B/f.u.within the ab plane). The ferromagnetism
occurs abruptly and reaches as high as TC=123 K for x=0.22. The Cr-driven
ferromagnetism is highly anisotropic, suggesting an important role for
spin-orbit coupling. Lattice constant and magnetic measurements strongly
support the valence of the Cr as tetravalent (Cr4+, 3d2 configuration). Cr
substitution for Ru in SrRuO3 (TC=165 K) enhances the itinerant ferromagnetism,
with TC reaching 290 K for x=0.30, consistent with Cr-induced ferromagnetism in
paramagnetic CaRuO3. Preliminary pressure-dependent magnetization of
CaRu0.85Cr0.15O3 shows strong enhancement of the saturation magnetization (25%
for P~0.7 GPa). All results indicate a coupling of Ru 4d and Cr 3d electrons
that is unexpectedly favorable for itinerant ferromagnetism which often exists
delicately in the ruthenates.</description><identifier>DOI: 10.48550/arxiv.cond-mat/0509084</identifier><language>eng</language><subject>Physics - Strongly Correlated Electrons</subject><creationdate>2005-09</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/cond-mat/0509084$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.cond-mat/0509084$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Durairaj, V</creatorcontrib><creatorcontrib>Elhami, E</creatorcontrib><creatorcontrib>Chikara, S</creatorcontrib><creatorcontrib>Lin, X. N</creatorcontrib><creatorcontrib>Douglass, A</creatorcontrib><creatorcontrib>Schlottmann, G. Cao P</creatorcontrib><creatorcontrib>Choi, E. S</creatorcontrib><creatorcontrib>Guertin, R. P</creatorcontrib><title>Itinerant Ferromagnetism and Metamagnetism in Cr Doped Perovskite Ruthenates</title><description>We report results of structural, magnetic and transport properties of single
crystal CaRu1-xCrxO3 (0≤x≤0.36) and SrRu1-xCrxO3
(0≤x≤0.30). Cr substitution as low as x=0.08 drives CaRu1-xCrxO3
from the paramagnetic state to an itinerant ferromagnetic state with
field-driven first-order metamagnetic transitions leading to a sizeable
saturation moment (~0.4B/f.u.within the ab plane). The ferromagnetism
occurs abruptly and reaches as high as TC=123 K for x=0.22. The Cr-driven
ferromagnetism is highly anisotropic, suggesting an important role for
spin-orbit coupling. Lattice constant and magnetic measurements strongly
support the valence of the Cr as tetravalent (Cr4+, 3d2 configuration). Cr
substitution for Ru in SrRuO3 (TC=165 K) enhances the itinerant ferromagnetism,
with TC reaching 290 K for x=0.30, consistent with Cr-induced ferromagnetism in
paramagnetic CaRuO3. Preliminary pressure-dependent magnetization of
CaRu0.85Cr0.15O3 shows strong enhancement of the saturation magnetization (25%
for P~0.7 GPa). All results indicate a coupling of Ru 4d and Cr 3d electrons
that is unexpectedly favorable for itinerant ferromagnetism which often exists
delicately in the ruthenates.</description><subject>Physics - Strongly Correlated Electrons</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpFz0FLwzAYxvFcdpDNz2AuHrslTdokR6lOBxVFdi9vkzdb0KYjjUO_vW4OPD3wPzzwI-SGs6XUVcVWkL7CcWnH6IoB8opVzDAtr0i7ySFigpjpGlMaB9hFzGEaKERHnzHDfwmRNonejwd09BXTeJzeQ0b69pn3GCHjtCAzDx8TXl92Trbrh23zVLQvj5vmri1AGVlIzY1wmpWgtXXAS-W8BC88Z5L1mqu6N1pzX8u-Lp3x1jkvVM-VsKU0thJzcvt3e0Z1hxQGSN_dCdf94roLTvwAke9OBA</recordid><startdate>20050904</startdate><enddate>20050904</enddate><creator>Durairaj, V</creator><creator>Elhami, E</creator><creator>Chikara, S</creator><creator>Lin, X. N</creator><creator>Douglass, A</creator><creator>Schlottmann, G. Cao P</creator><creator>Choi, E. S</creator><creator>Guertin, R. P</creator><scope>GOX</scope></search><sort><creationdate>20050904</creationdate><title>Itinerant Ferromagnetism and Metamagnetism in Cr Doped Perovskite Ruthenates</title><author>Durairaj, V ; Elhami, E ; Chikara, S ; Lin, X. N ; Douglass, A ; Schlottmann, G. Cao P ; Choi, E. S ; Guertin, R. P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a794-48193d802a88cda127df4af3f1040b8176b9881f64b62d9fcddf37b173c249c53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Physics - Strongly Correlated Electrons</topic><toplevel>online_resources</toplevel><creatorcontrib>Durairaj, V</creatorcontrib><creatorcontrib>Elhami, E</creatorcontrib><creatorcontrib>Chikara, S</creatorcontrib><creatorcontrib>Lin, X. N</creatorcontrib><creatorcontrib>Douglass, A</creatorcontrib><creatorcontrib>Schlottmann, G. Cao P</creatorcontrib><creatorcontrib>Choi, E. S</creatorcontrib><creatorcontrib>Guertin, R. P</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Durairaj, V</au><au>Elhami, E</au><au>Chikara, S</au><au>Lin, X. N</au><au>Douglass, A</au><au>Schlottmann, G. Cao P</au><au>Choi, E. S</au><au>Guertin, R. P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Itinerant Ferromagnetism and Metamagnetism in Cr Doped Perovskite Ruthenates</atitle><date>2005-09-04</date><risdate>2005</risdate><abstract>We report results of structural, magnetic and transport properties of single
crystal CaRu1-xCrxO3 (0≤x≤0.36) and SrRu1-xCrxO3
(0≤x≤0.30). Cr substitution as low as x=0.08 drives CaRu1-xCrxO3
from the paramagnetic state to an itinerant ferromagnetic state with
field-driven first-order metamagnetic transitions leading to a sizeable
saturation moment (~0.4B/f.u.within the ab plane). The ferromagnetism
occurs abruptly and reaches as high as TC=123 K for x=0.22. The Cr-driven
ferromagnetism is highly anisotropic, suggesting an important role for
spin-orbit coupling. Lattice constant and magnetic measurements strongly
support the valence of the Cr as tetravalent (Cr4+, 3d2 configuration). Cr
substitution for Ru in SrRuO3 (TC=165 K) enhances the itinerant ferromagnetism,
with TC reaching 290 K for x=0.30, consistent with Cr-induced ferromagnetism in
paramagnetic CaRuO3. Preliminary pressure-dependent magnetization of
CaRu0.85Cr0.15O3 shows strong enhancement of the saturation magnetization (25%
for P~0.7 GPa). All results indicate a coupling of Ru 4d and Cr 3d electrons
that is unexpectedly favorable for itinerant ferromagnetism which often exists
delicately in the ruthenates.</abstract><doi>10.48550/arxiv.cond-mat/0509084</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Strongly Correlated Electrons |
| title | Itinerant Ferromagnetism and Metamagnetism in Cr Doped Perovskite Ruthenates |
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