Effect of Gd substitution on the structural, magnetic, and magnetocaloric properties of HoCrO3
Rare-earth chromites are a new type of magnetoelectric multiferroics. In this work, a Ho0.33Gd0.67CrO3 powder sample was synthesized via a citrate route, and the structural properties were characterized by X-ray diffraction, scanning electron microscopy, and the Raman technique. The UV-Visible optic...
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| creator | Yin, Shiqi Zhong, Wei Guild, Curtis J. Shi, Jianhang Suib, Steven L. Cótica, Luiz Fernando Jain, Menka |
| description | Rare-earth chromites are a new type of magnetoelectric multiferroics. In this work, a Ho0.33Gd0.67CrO3 powder sample was synthesized via a citrate route, and the structural properties were characterized by X-ray diffraction, scanning electron microscopy, and the Raman technique. The UV-Visible optical absorbance spectra were also measured in the wavelength range of 200–800 nm. The valence state of Cr was found to be purely 3+ according to the X-ray photoelectron spectroscopy. The temperature-dependent dielectric constant and loss tangent data measured between the frequencies of 1 kHz and 1 MHz show no anomalies around the magnetic transition temperature of the material. The dc magnetization measurements show that the ordering temperature of Cr3+ (
TNCr) is 155 K for Ho0.33Gd0.67CrO3, which is larger than 140 K for HoCrO3. The positive slope of the Arrott plots from 0 T to 7 T reveals that the antiferromagnetic-paramagnetic phase transition is second-order in nature. At a field of 7 T, the Ho0.33Gd0.67CrO3 sample showed a giant magnetocaloric entropy change, −ΔS, of ∼23.3 J/kg K at 5 K, and a refrigeration capacity of ∼481.2 J/kg, which are much higher than those of pure bulk HoCrO3. This renders this material prospective for magnetic refrigeration in the low temperature ( |
| doi_str_mv | 10.1063/1.5003637 |
| format | Article |
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TNCr) is 155 K for Ho0.33Gd0.67CrO3, which is larger than 140 K for HoCrO3. The positive slope of the Arrott plots from 0 T to 7 T reveals that the antiferromagnetic-paramagnetic phase transition is second-order in nature. At a field of 7 T, the Ho0.33Gd0.67CrO3 sample showed a giant magnetocaloric entropy change, −ΔS, of ∼23.3 J/kg K at 5 K, and a refrigeration capacity of ∼481.2 J/kg, which are much higher than those of pure bulk HoCrO3. This renders this material prospective for magnetic refrigeration in the low temperature (<30 K) range.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.5003637</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Antiferromagnetism ; Applied physics ; Chromite ; Gadolinium ; Magnetic properties ; Magnetic transitions ; Phase transitions ; Rare earth elements ; Refrigeration ; Scanning electron microscopy ; Spectrum analysis ; Temperature dependence ; Transition temperature ; X-ray diffraction</subject><ispartof>Journal of applied physics, 2018-02, Vol.123 (5)</ispartof><rights>Author(s)</rights><rights>2018 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c393t-e4e17a5768937202916ce7c728ab0e78eb9ef2bf07f4d9ce0a8b113ae23196dc3</citedby><cites>FETCH-LOGICAL-c393t-e4e17a5768937202916ce7c728ab0e78eb9ef2bf07f4d9ce0a8b113ae23196dc3</cites><orcidid>0000-0001-5057-2566 ; 0000-0002-2264-6895</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/1.5003637$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,794,4512,27924,27925,76384</link.rule.ids></links><search><creatorcontrib>Yin, Shiqi</creatorcontrib><creatorcontrib>Zhong, Wei</creatorcontrib><creatorcontrib>Guild, Curtis J.</creatorcontrib><creatorcontrib>Shi, Jianhang</creatorcontrib><creatorcontrib>Suib, Steven L.</creatorcontrib><creatorcontrib>Cótica, Luiz Fernando</creatorcontrib><creatorcontrib>Jain, Menka</creatorcontrib><title>Effect of Gd substitution on the structural, magnetic, and magnetocaloric properties of HoCrO3</title><title>Journal of applied physics</title><description>Rare-earth chromites are a new type of magnetoelectric multiferroics. In this work, a Ho0.33Gd0.67CrO3 powder sample was synthesized via a citrate route, and the structural properties were characterized by X-ray diffraction, scanning electron microscopy, and the Raman technique. The UV-Visible optical absorbance spectra were also measured in the wavelength range of 200–800 nm. The valence state of Cr was found to be purely 3+ according to the X-ray photoelectron spectroscopy. The temperature-dependent dielectric constant and loss tangent data measured between the frequencies of 1 kHz and 1 MHz show no anomalies around the magnetic transition temperature of the material. The dc magnetization measurements show that the ordering temperature of Cr3+ (
TNCr) is 155 K for Ho0.33Gd0.67CrO3, which is larger than 140 K for HoCrO3. The positive slope of the Arrott plots from 0 T to 7 T reveals that the antiferromagnetic-paramagnetic phase transition is second-order in nature. At a field of 7 T, the Ho0.33Gd0.67CrO3 sample showed a giant magnetocaloric entropy change, −ΔS, of ∼23.3 J/kg K at 5 K, and a refrigeration capacity of ∼481.2 J/kg, which are much higher than those of pure bulk HoCrO3. This renders this material prospective for magnetic refrigeration in the low temperature (<30 K) range.</description><subject>Antiferromagnetism</subject><subject>Applied physics</subject><subject>Chromite</subject><subject>Gadolinium</subject><subject>Magnetic properties</subject><subject>Magnetic transitions</subject><subject>Phase transitions</subject><subject>Rare earth elements</subject><subject>Refrigeration</subject><subject>Scanning electron microscopy</subject><subject>Spectrum analysis</subject><subject>Temperature dependence</subject><subject>Transition temperature</subject><subject>X-ray diffraction</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kMFKAzEQhoMoWKsH3yDgSenWmU13kxyl1FYo9KJXl2x2olvaTU2yB9_eLe1ZGPgZ-Phn-Bi7R5gilOIZpwWAKIW8YCMEpTNZFHDJRgA5ZkpLfc1uYtwCICqhR-xz4RzZxL3jy4bHvo6pTX1qfceHSd_EYwq9TX0wuwnfm6-OUmsn3HTNefPW7HxoLT8Ef6CQWorHtpWfh424ZVfO7CLdnXPMPl4X7_NVtt4s3-Yv68wKLVJGM0JpClkqLWQOucbSkrQyV6YGkopqTS6vHUg3a7QlMKpGFIZygbpsrBizh1Pv8MRPTzFVW9-HbjhZ5YiFAj3D2UA9nigbfIyBXHUI7d6E3wqhOuqrsDrrG9inExttm8xRyD_wHwoZbwQ</recordid><startdate>20180207</startdate><enddate>20180207</enddate><creator>Yin, Shiqi</creator><creator>Zhong, Wei</creator><creator>Guild, Curtis J.</creator><creator>Shi, Jianhang</creator><creator>Suib, Steven L.</creator><creator>Cótica, Luiz Fernando</creator><creator>Jain, Menka</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-5057-2566</orcidid><orcidid>https://orcid.org/0000-0002-2264-6895</orcidid></search><sort><creationdate>20180207</creationdate><title>Effect of Gd substitution on the structural, magnetic, and magnetocaloric properties of HoCrO3</title><author>Yin, Shiqi ; Zhong, Wei ; Guild, Curtis J. ; Shi, Jianhang ; Suib, Steven L. ; Cótica, Luiz Fernando ; Jain, Menka</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-e4e17a5768937202916ce7c728ab0e78eb9ef2bf07f4d9ce0a8b113ae23196dc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Antiferromagnetism</topic><topic>Applied physics</topic><topic>Chromite</topic><topic>Gadolinium</topic><topic>Magnetic properties</topic><topic>Magnetic transitions</topic><topic>Phase transitions</topic><topic>Rare earth elements</topic><topic>Refrigeration</topic><topic>Scanning electron microscopy</topic><topic>Spectrum analysis</topic><topic>Temperature dependence</topic><topic>Transition temperature</topic><topic>X-ray diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yin, Shiqi</creatorcontrib><creatorcontrib>Zhong, Wei</creatorcontrib><creatorcontrib>Guild, Curtis J.</creatorcontrib><creatorcontrib>Shi, Jianhang</creatorcontrib><creatorcontrib>Suib, Steven L.</creatorcontrib><creatorcontrib>Cótica, Luiz Fernando</creatorcontrib><creatorcontrib>Jain, Menka</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yin, Shiqi</au><au>Zhong, Wei</au><au>Guild, Curtis J.</au><au>Shi, Jianhang</au><au>Suib, Steven L.</au><au>Cótica, Luiz Fernando</au><au>Jain, Menka</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Gd substitution on the structural, magnetic, and magnetocaloric properties of HoCrO3</atitle><jtitle>Journal of applied physics</jtitle><date>2018-02-07</date><risdate>2018</risdate><volume>123</volume><issue>5</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Rare-earth chromites are a new type of magnetoelectric multiferroics. In this work, a Ho0.33Gd0.67CrO3 powder sample was synthesized via a citrate route, and the structural properties were characterized by X-ray diffraction, scanning electron microscopy, and the Raman technique. The UV-Visible optical absorbance spectra were also measured in the wavelength range of 200–800 nm. The valence state of Cr was found to be purely 3+ according to the X-ray photoelectron spectroscopy. The temperature-dependent dielectric constant and loss tangent data measured between the frequencies of 1 kHz and 1 MHz show no anomalies around the magnetic transition temperature of the material. The dc magnetization measurements show that the ordering temperature of Cr3+ (
TNCr) is 155 K for Ho0.33Gd0.67CrO3, which is larger than 140 K for HoCrO3. The positive slope of the Arrott plots from 0 T to 7 T reveals that the antiferromagnetic-paramagnetic phase transition is second-order in nature. At a field of 7 T, the Ho0.33Gd0.67CrO3 sample showed a giant magnetocaloric entropy change, −ΔS, of ∼23.3 J/kg K at 5 K, and a refrigeration capacity of ∼481.2 J/kg, which are much higher than those of pure bulk HoCrO3. This renders this material prospective for magnetic refrigeration in the low temperature (<30 K) range.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5003637</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-5057-2566</orcidid><orcidid>https://orcid.org/0000-0002-2264-6895</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Antiferromagnetism Applied physics Chromite Gadolinium Magnetic properties Magnetic transitions Phase transitions Rare earth elements Refrigeration Scanning electron microscopy Spectrum analysis Temperature dependence Transition temperature X-ray diffraction |
| title | Effect of Gd substitution on the structural, magnetic, and magnetocaloric properties of HoCrO3 |
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