{"title":"Magnetic susceptibility and heat capacity of a quasi-spin chain compound, Li2CuO2","authors":"","doi":"10.1016/j.jmmm.2024.172617","DOIUrl":null,"url":null,"abstract":"<div><div>Magnetization and heat capacity (<span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>) measurements were performed on blade-shaped single crystals of Li<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>CuO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>, a one-dimensional spin-chain compound synthesized via the flux method. The magnetization and heat capacity measurements confirm a long-range antiferromagnetic transition at <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>N</mi></mrow></msub></math></span> = 9.3 K. The magnetic susceptibility, <span><math><mi>χ</mi></math></span> with magnetic field applied parallel (<span><math><msub><mrow><mi>χ</mi></mrow><mrow><mo>∥</mo><mi>b</mi></mrow></msub></math></span>) and perpendicular (<span><math><msub><mrow><mi>χ</mi></mrow><mrow><mo>⊥</mo><mi>b</mi></mrow></msub></math></span>) to the spin chain direction (crystallographic <span><math><mi>b</mi></math></span>-axis) is reported. <span><math><mrow><mi>χ</mi><mrow><mo>(</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> measurements reveal anisotropic behavior, with <span><math><msub><mrow><mi>χ</mi></mrow><mrow><mo>⊥</mo><mi>b</mi></mrow></msub></math></span> <span><math><mrow><mo>></mo><msub><mrow><mi>χ</mi></mrow><mrow><mo>∥</mo><mi>b</mi></mrow></msub></mrow></math></span> in the temperature range <span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>N</mi></mrow></msub><mo><</mo><mi>T</mi><mo><</mo><mn>350</mn></mrow></math></span> K, with a ratio of <span><math><mrow><msub><mrow><mi>χ</mi></mrow><mrow><mo>⊥</mo></mrow></msub><mo>/</mo><msub><mrow><mi>χ</mi></mrow><mrow><mo>∥</mo></mrow></msub></mrow></math></span> = 1.15 at 300 K and with <span><math><msub><mrow><mi>χ</mi></mrow><mrow><mo>⊥</mo><mi>b</mi></mrow></msub></math></span> <span><math><mrow><mo><</mo><msub><mrow><mi>χ</mi></mrow><mrow><mo>∥</mo><mi>b</mi></mrow></msub></mrow></math></span> at <span><math><mrow><mi>T</mi><mo>=</mo><mn>2</mn></mrow></math></span> K, with a ratio of <span><math><mrow><msub><mrow><mi>χ</mi></mrow><mrow><mo>⊥</mo></mrow></msub><mo>/</mo><msub><mrow><mi>χ</mi></mrow><mrow><mo>∥</mo></mrow></msub></mrow></math></span> = 0.86 at 2 K. Unlike the previous studies reporting ferromagnetic components at low temperatures, we report the absence of a ferromagnetic ordering at low temperatures.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885324009089","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Magnetization and heat capacity () measurements were performed on blade-shaped single crystals of LiCuO, a one-dimensional spin-chain compound synthesized via the flux method. The magnetization and heat capacity measurements confirm a long-range antiferromagnetic transition at = 9.3 K. The magnetic susceptibility, with magnetic field applied parallel () and perpendicular () to the spin chain direction (crystallographic -axis) is reported. measurements reveal anisotropic behavior, with in the temperature range K, with a ratio of = 1.15 at 300 K and with at K, with a ratio of = 0.86 at 2 K. Unlike the previous studies reporting ferromagnetic components at low temperatures, we report the absence of a ferromagnetic ordering at low temperatures.
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