{"title":"接触 20 纳米 DyF3 纳米粒子的氦-3 核磁弛豫机制研究","authors":"Adeliya Garaeva, Ekaterina Boltenkova, Kajum Safiullin , Irina Romanova, Egor Alakshin","doi":"10.1016/j.jmr.2024.107672","DOIUrl":null,"url":null,"abstract":"<div><p>The spin kinetics of adsorbed and liquid <sup>3</sup>He in contact with a mixture of LaF<sub>3</sub> (99.67 %) and DyF<sub>3</sub> (0.33 %) 20 nm powders at temperatures of 1.5–4.2 K in magnetic fields up to 505<!--> <!-->mT was studied by pulsed nuclear magnetic resonance (NMR). Two-component of nuclear magnetic relaxation was observed in the experiment and theoretical relaxation model was proposed. The possible explanation of this phenomena can be carried out by a model that consider the exchange of magnetization of helium-3 nuclei located in the adsorbed layer and in the bulk of the liquid. The proposed relaxation model can be applied to other systems with the strong influence of adsorbed layer.</p></div>","PeriodicalId":16267,"journal":{"name":"Journal of magnetic resonance","volume":"362 ","pages":"Article 107672"},"PeriodicalIF":2.0000,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A study of helium-3 nuclear magnetic relaxation mechanism in contact with 20 nm DyF3 nanoparticles\",\"authors\":\"Adeliya Garaeva, Ekaterina Boltenkova, Kajum Safiullin , Irina Romanova, Egor Alakshin\",\"doi\":\"10.1016/j.jmr.2024.107672\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The spin kinetics of adsorbed and liquid <sup>3</sup>He in contact with a mixture of LaF<sub>3</sub> (99.67 %) and DyF<sub>3</sub> (0.33 %) 20 nm powders at temperatures of 1.5–4.2 K in magnetic fields up to 505<!--> <!-->mT was studied by pulsed nuclear magnetic resonance (NMR). Two-component of nuclear magnetic relaxation was observed in the experiment and theoretical relaxation model was proposed. The possible explanation of this phenomena can be carried out by a model that consider the exchange of magnetization of helium-3 nuclei located in the adsorbed layer and in the bulk of the liquid. The proposed relaxation model can be applied to other systems with the strong influence of adsorbed layer.</p></div>\",\"PeriodicalId\":16267,\"journal\":{\"name\":\"Journal of magnetic resonance\",\"volume\":\"362 \",\"pages\":\"Article 107672\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2024-04-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of magnetic resonance\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1090780724000569\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIOCHEMICAL RESEARCH METHODS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of magnetic resonance","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1090780724000569","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
A study of helium-3 nuclear magnetic relaxation mechanism in contact with 20 nm DyF3 nanoparticles
The spin kinetics of adsorbed and liquid 3He in contact with a mixture of LaF3 (99.67 %) and DyF3 (0.33 %) 20 nm powders at temperatures of 1.5–4.2 K in magnetic fields up to 505 mT was studied by pulsed nuclear magnetic resonance (NMR). Two-component of nuclear magnetic relaxation was observed in the experiment and theoretical relaxation model was proposed. The possible explanation of this phenomena can be carried out by a model that consider the exchange of magnetization of helium-3 nuclei located in the adsorbed layer and in the bulk of the liquid. The proposed relaxation model can be applied to other systems with the strong influence of adsorbed layer.
期刊介绍：
The Journal of Magnetic Resonance presents original technical and scientific papers in all aspects of magnetic resonance, including nuclear magnetic resonance spectroscopy (NMR) of solids and liquids, electron spin/paramagnetic resonance (EPR), in vivo magnetic resonance imaging (MRI) and spectroscopy (MRS), nuclear quadrupole resonance (NQR) and magnetic resonance phenomena at nearly zero fields or in combination with optics. The Journal''s main aims include deepening the physical principles underlying all these spectroscopies, publishing significant theoretical and experimental results leading to spectral and spatial progress in these areas, and opening new MR-based applications in chemistry, biology and medicine. The Journal also seeks descriptions of novel apparatuses, new experimental protocols, and new procedures of data analysis and interpretation - including computational and quantum-mechanical methods - capable of advancing MR spectroscopy and imaging.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
