Investigation of ionic and anomalous magnetic behavior in CrSe2 using 8Li β-NMR
We have studied a mosaic of 1T-CrSe2 single crystals using β-detected nuclear magnetic resonance of 8Li from 4 to 300 K. We identify two broad resonances that show no evidence of quadrupolar splitting, indicating two magnetically distinct environments for the implanted ion. We observe stretched expo...
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| Veröffentlicht in: | RSC advances 2020-02, Vol.10 (14), p.8190-8197 |
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| container_title | RSC advances |
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| creator | Ticknor, John O Umegaki, Izumi McFadden, Ryan M L Chatzichristos, Aris Fujimoto, Derek Karner, Victoria L Kiefl, Robert F Kobayashi, Shintaro Levy, C D Philip Li, Ruohong Morris, Gerald D Pearson, Matthew R Yoshimura, Kazuyoshi Sugiyama, Jun MacFarlane, W Andrew |
| description | We have studied a mosaic of 1T-CrSe2 single crystals using β-detected nuclear magnetic resonance of 8Li from 4 to 300 K. We identify two broad resonances that show no evidence of quadrupolar splitting, indicating two magnetically distinct environments for the implanted ion. We observe stretched exponential spin lattice relaxation and a corresponding rate (1/T1) that increases monotonically above 200 K, consistent with the onset of ionic diffusion. A pronounced maximum in 1/T1 is observed at the low temperature magnetic transition near 20 K. Between these limits, 1/T1 exhibits a broad minimum with an anomalous absence of strong features in the vicinity of structural and magnetic transitions between 150 and 200 K. Together, the results suggest 8Li+ site occupation within the van der Waals gap between CrSe2 trilayers. Possible origins of the two environments are discussed. |
| doi_str_mv | 10.1039/c9ra07065f |
| format | Article |
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We identify two broad resonances that show no evidence of quadrupolar splitting, indicating two magnetically distinct environments for the implanted ion. We observe stretched exponential spin lattice relaxation and a corresponding rate (1/T1) that increases monotonically above 200 K, consistent with the onset of ionic diffusion. A pronounced maximum in 1/T1 is observed at the low temperature magnetic transition near 20 K. Between these limits, 1/T1 exhibits a broad minimum with an anomalous absence of strong features in the vicinity of structural and magnetic transitions between 150 and 200 K. Together, the results suggest 8Li+ site occupation within the van der Waals gap between CrSe2 trilayers. 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We identify two broad resonances that show no evidence of quadrupolar splitting, indicating two magnetically distinct environments for the implanted ion. We observe stretched exponential spin lattice relaxation and a corresponding rate (1/T1) that increases monotonically above 200 K, consistent with the onset of ionic diffusion. A pronounced maximum in 1/T1 is observed at the low temperature magnetic transition near 20 K. Between these limits, 1/T1 exhibits a broad minimum with an anomalous absence of strong features in the vicinity of structural and magnetic transitions between 150 and 200 K. Together, the results suggest 8Li+ site occupation within the van der Waals gap between CrSe2 trilayers. Possible origins of the two environments are discussed.</description><subject>Chemistry</subject><subject>Ion diffusion</subject><subject>Low temperature</subject><subject>Magnetic properties</subject><subject>Magnetic transitions</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Single crystals</subject><issn>2046-2069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpdUMtKAzEUDYLYUrvxCwJu3IzmMUkmG0GKj0J94GMdMpmkTZlJamam4G_5IX6TAd3ohcuBew6Hcy4AJxidY0TlhZFJI4E4cwdgSlDJC4K4nIB5329RHs4w4fgITCgrpahwNQVPy7C3_eDXevAxwOhgBm-gDk3e2Ok2jj3s9DrYIZ9ru9F7HxP0AS7SiyVw7H1Yw2rl4ddn8XD_fAwOnW57O__FGXi7uX5d3BWrx9vl4mpV7AgVQ8GNICJHsq7kjnJhqpoR2jhNCGtIhaTjjBGDJW6QaLC2GJs60w2T0lFE6Qxc_vjuxrqzjbFhSLpVu-Q7nT5U1F79ZYLfqHXcK4lKWQmRDc5-DVJ8H_MPVOd7Y9tWB5s7K8JZxcscBWfp6T_pNo4p5HqKUC5FiQmV9BvMzHVy</recordid><startdate>20200226</startdate><enddate>20200226</enddate><creator>Ticknor, John O</creator><creator>Umegaki, Izumi</creator><creator>McFadden, Ryan M L</creator><creator>Chatzichristos, Aris</creator><creator>Fujimoto, Derek</creator><creator>Karner, Victoria L</creator><creator>Kiefl, Robert F</creator><creator>Kobayashi, Shintaro</creator><creator>Levy, C D Philip</creator><creator>Li, Ruohong</creator><creator>Morris, Gerald D</creator><creator>Pearson, Matthew R</creator><creator>Yoshimura, Kazuyoshi</creator><creator>Sugiyama, Jun</creator><creator>MacFarlane, W Andrew</creator><general>Royal Society of Chemistry</general><general>The Royal Society of Chemistry</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20200226</creationdate><title>Investigation of ionic and anomalous magnetic behavior in CrSe2 using 8Li β-NMR</title><author>Ticknor, John O ; Umegaki, Izumi ; McFadden, Ryan M L ; Chatzichristos, Aris ; Fujimoto, Derek ; Karner, Victoria L ; Kiefl, Robert F ; Kobayashi, Shintaro ; Levy, C D Philip ; Li, Ruohong ; Morris, Gerald D ; Pearson, Matthew R ; Yoshimura, Kazuyoshi ; Sugiyama, Jun ; MacFarlane, W Andrew</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p237t-6c727000ef46f367c8b523dfa225d2809f6552c191d07d1ae11cbdfad599f3033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Chemistry</topic><topic>Ion diffusion</topic><topic>Low temperature</topic><topic>Magnetic properties</topic><topic>Magnetic transitions</topic><topic>NMR</topic><topic>Nuclear magnetic resonance</topic><topic>Single crystals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ticknor, John O</creatorcontrib><creatorcontrib>Umegaki, Izumi</creatorcontrib><creatorcontrib>McFadden, Ryan M L</creatorcontrib><creatorcontrib>Chatzichristos, Aris</creatorcontrib><creatorcontrib>Fujimoto, Derek</creatorcontrib><creatorcontrib>Karner, Victoria L</creatorcontrib><creatorcontrib>Kiefl, Robert F</creatorcontrib><creatorcontrib>Kobayashi, Shintaro</creatorcontrib><creatorcontrib>Levy, C D Philip</creatorcontrib><creatorcontrib>Li, Ruohong</creatorcontrib><creatorcontrib>Morris, Gerald D</creatorcontrib><creatorcontrib>Pearson, Matthew R</creatorcontrib><creatorcontrib>Yoshimura, Kazuyoshi</creatorcontrib><creatorcontrib>Sugiyama, Jun</creatorcontrib><creatorcontrib>MacFarlane, W Andrew</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>RSC advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ticknor, John O</au><au>Umegaki, Izumi</au><au>McFadden, Ryan M L</au><au>Chatzichristos, Aris</au><au>Fujimoto, Derek</au><au>Karner, Victoria L</au><au>Kiefl, Robert F</au><au>Kobayashi, Shintaro</au><au>Levy, C D Philip</au><au>Li, Ruohong</au><au>Morris, Gerald D</au><au>Pearson, Matthew R</au><au>Yoshimura, Kazuyoshi</au><au>Sugiyama, Jun</au><au>MacFarlane, W Andrew</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of ionic and anomalous magnetic behavior in CrSe2 using 8Li β-NMR</atitle><jtitle>RSC advances</jtitle><date>2020-02-26</date><risdate>2020</risdate><volume>10</volume><issue>14</issue><spage>8190</spage><epage>8197</epage><pages>8190-8197</pages><eissn>2046-2069</eissn><abstract>We have studied a mosaic of 1T-CrSe2 single crystals using β-detected nuclear magnetic resonance of 8Li from 4 to 300 K. We identify two broad resonances that show no evidence of quadrupolar splitting, indicating two magnetically distinct environments for the implanted ion. We observe stretched exponential spin lattice relaxation and a corresponding rate (1/T1) that increases monotonically above 200 K, consistent with the onset of ionic diffusion. A pronounced maximum in 1/T1 is observed at the low temperature magnetic transition near 20 K. Between these limits, 1/T1 exhibits a broad minimum with an anomalous absence of strong features in the vicinity of structural and magnetic transitions between 150 and 200 K. Together, the results suggest 8Li+ site occupation within the van der Waals gap between CrSe2 trilayers. Possible origins of the two environments are discussed.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><pmid>35497818</pmid><doi>10.1039/c9ra07065f</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; PubMed Central Open Access |
| subjects | Chemistry Ion diffusion Low temperature Magnetic properties Magnetic transitions NMR Nuclear magnetic resonance Single crystals |
| title | Investigation of ionic and anomalous magnetic behavior in CrSe2 using 8Li β-NMR |
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