P. G. Gagarin, A. V. Gus’kov, V. N. Gus’kov, A. V. Khoroshilov, N. N. Efimov, K. S. Gavrichev
{"title":"Heat Capacity and Magnetic Properties of PrMgAl11O19","authors":"P. G. Gagarin, A. V. Gus’kov, V. N. Gus’kov, A. V. Khoroshilov, N. N. Efimov, K. S. Gavrichev","doi":"10.1134/S0036023624602186","DOIUrl":null,"url":null,"abstract":"<p>The isobaric heat capacity of magnesium praseodymium hexaaluminate PrMgAl<sub>11</sub>O<sub>19</sub> having the magnetoplumbite structure was measured by three calorimetric methods in the temperature range 2–1865 K. Reconciled and smoothed heat capacity data were used to calculate thermodynamic functions (entropy, enthalpy change, and reduced Gibbs energy) in this temperature range. A gentle heat capacity anomaly with a peak at about 8 K was found; its entropy and enthalpy were calculated. Magnetic properties of PrMgAl<sub>11</sub>O<sub>19</sub> were studied by dynamic magnetic susceptibility measurements in the range 2–300 K. The results of magnetic measurements revealed an anomaly on the imaginary component of dynamic magnetic susceptibility, the temperature range of which matched that of the heat capacity anomaly.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 10","pages":"1532 - 1539"},"PeriodicalIF":1.5000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Inorganic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036023624602186","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
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Abstract
The isobaric heat capacity of magnesium praseodymium hexaaluminate PrMgAl11O19 having the magnetoplumbite structure was measured by three calorimetric methods in the temperature range 2–1865 K. Reconciled and smoothed heat capacity data were used to calculate thermodynamic functions (entropy, enthalpy change, and reduced Gibbs energy) in this temperature range. A gentle heat capacity anomaly with a peak at about 8 K was found; its entropy and enthalpy were calculated. Magnetic properties of PrMgAl11O19 were studied by dynamic magnetic susceptibility measurements in the range 2–300 K. The results of magnetic measurements revealed an anomaly on the imaginary component of dynamic magnetic susceptibility, the temperature range of which matched that of the heat capacity anomaly.
期刊介绍：
Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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