Experimental determination of thermal expansivity of calcium ferrite-type MgAl2O4 and its application to thermodynamical assessment of thermoelastic parameters

IF 1.2 4区 地球科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Physics and Chemistry of Minerals Pub Date : 2024-02-09 DOI:10.1007/s00269-023-01266-1
Hiroshi Kojitani, Mei Gonai, Yoshiyuki Inaguma, Masaki Akaogi
{"title":"Experimental determination of thermal expansivity of calcium ferrite-type MgAl2O4 and its application to thermodynamical assessment of thermoelastic parameters","authors":"Hiroshi Kojitani,&nbsp;Mei Gonai,&nbsp;Yoshiyuki Inaguma,&nbsp;Masaki Akaogi","doi":"10.1007/s00269-023-01266-1","DOIUrl":null,"url":null,"abstract":"<div><p>High-temperature X-ray diffraction measurements of calcium ferrite (CF)-type MgAl<sub>2</sub>O<sub>4</sub> were performed in a temperature range of 300–673 K at atmospheric pressure. From temperature dependence of the unit cell volume, thermal expansivity (<i>α</i>) was determined to be <i>α</i>(<i>T</i>) = (2.46 ± 0.13) × 10<sup>–5</sup> + (1.2 ± 0.3) × 10<sup>–8</sup> <i>T</i> in 1/K. Thermoelastic parameters of isothermal bulk modulus at zero pressure (<i>K</i><sub><i>T</i>0</sub>), its pressure derivative (<i>K</i><sub><i>T</i></sub>′) and temperature derivative [(∂<i>K</i><sub><i>T</i>0</sub>/∂<i>T</i>)<sub><i>P</i></sub>] of MgAl<sub>2</sub>O<sub>4</sub> CF were optimized by iteration calculation combining the least squares fitting of a third-order Birch–Murnaghan equation of state to previous <i>P</i>–<i>V</i>–<i>T</i> data with <i>α</i> calculation using the Grüneisen relation equation, <i>α</i> = <i>γ</i><sub>th</sub><i>C</i><sub><i>V</i></sub>/(<i>K</i><sub><i>T</i>0</sub><i>V</i>) where <i>γ</i><sub>th</sub> and <i>C</i><sub><i>V</i></sub> are thermal Grüneisen parameter and isochoric heat capacity, respectively. <i>γ</i><sub>th</sub> was constrained by the <i>α</i> measured in this study. When pressure data were rescaled by Au equations of state which are different from that adopted in the previous study and temperature data were corrected using pressure dependence of electromotive force of a W–Re thermocouple, <i>K</i><sub><i>T</i>0</sub>, <i>K</i><sub><i>T</i></sub>′ and (∂<i>K</i><sub><i>T</i>0</sub>/∂<i>T</i>)<sub><i>P</i></sub> were assessed to be 216(4) GPa, 3.9(3) and − 0.027(3) GPa/K, respectively. It was suggested that the optimized <i>α</i> was about 17% lower than that determined by the previous study at 2000 K.</p></div>","PeriodicalId":20132,"journal":{"name":"Physics and Chemistry of Minerals","volume":"51 1","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics and Chemistry of Minerals","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1007/s00269-023-01266-1","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

High-temperature X-ray diffraction measurements of calcium ferrite (CF)-type MgAl2O4 were performed in a temperature range of 300–673 K at atmospheric pressure. From temperature dependence of the unit cell volume, thermal expansivity (α) was determined to be α(T) = (2.46 ± 0.13) × 10–5 + (1.2 ± 0.3) × 10–8 T in 1/K. Thermoelastic parameters of isothermal bulk modulus at zero pressure (KT0), its pressure derivative (KT′) and temperature derivative [(∂KT0/∂T)P] of MgAl2O4 CF were optimized by iteration calculation combining the least squares fitting of a third-order Birch–Murnaghan equation of state to previous PVT data with α calculation using the Grüneisen relation equation, α = γthCV/(KT0V) where γth and CV are thermal Grüneisen parameter and isochoric heat capacity, respectively. γth was constrained by the α measured in this study. When pressure data were rescaled by Au equations of state which are different from that adopted in the previous study and temperature data were corrected using pressure dependence of electromotive force of a W–Re thermocouple, KT0, KT′ and (∂KT0/∂T)P were assessed to be 216(4) GPa, 3.9(3) and − 0.027(3) GPa/K, respectively. It was suggested that the optimized α was about 17% lower than that determined by the previous study at 2000 K.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
钙铁氧体型 MgAl2O4 热膨胀率的实验测定及其在热弹性参数热力学评估中的应用
在大气压力下,在 300-673 K 的温度范围内对钙铁氧体(CF)型 MgAl2O4 进行了高温 X 射线衍射测量。根据单位晶胞体积的温度依赖性,热膨胀率 (α)被确定为 α(T) = (2.46 ± 0.13) × 10-5 + (1.2 ± 0.3) × 10-8 T,单位为 1/K。MgAl2O4 CF 的零压等温体积模量(KT0)、其压力导数(KT′)和温度导数[(∂KT0/∂T)P]的热弹性参数是通过迭代计算优化的,该计算将三阶 Birch-Murnaghan 状态方程的最小二乘法拟合与先前的 P-V-T 数据相结合,并使用格吕尼森关系式计算α、α = γthCV/(KT0V) 其中,γth 和 CV 分别为热格鲁尼森参数和等时热容。γth由本研究中测得的α限制。当使用不同于之前研究的 Au 状态方程对压力数据进行重新标定,并使用 W-Re 热电偶的电动势压力依赖性对温度数据进行校正时,KT0、KT′ 和 (∂KT0/∂T)P 分别被评估为 216(4) GPa、3.9(3) 和 - 0.027(3) GPa/K。研究表明,优化后的α比之前在 2000 K 下测定的α低约 17%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Physics and Chemistry of Minerals
Physics and Chemistry of Minerals 地学-材料科学:综合
CiteScore
2.90
自引率
14.30%
发文量
43
审稿时长
3 months
期刊介绍: Physics and Chemistry of Minerals is an international journal devoted to publishing articles and short communications of physical or chemical studies on minerals or solids related to minerals. The aim of the journal is to support competent interdisciplinary work in mineralogy and physics or chemistry. Particular emphasis is placed on applications of modern techniques or new theories and models to interpret atomic structures and physical or chemical properties of minerals. Some subjects of interest are: -Relationships between atomic structure and crystalline state (structures of various states, crystal energies, crystal growth, thermodynamic studies, phase transformations, solid solution, exsolution phenomena, etc.) -General solid state spectroscopy (ultraviolet, visible, infrared, Raman, ESCA, luminescence, X-ray, electron paramagnetic resonance, nuclear magnetic resonance, gamma ray resonance, etc.) -Experimental and theoretical analysis of chemical bonding in minerals (application of crystal field, molecular orbital, band theories, etc.) -Physical properties (magnetic, mechanical, electric, optical, thermodynamic, etc.) -Relations between thermal expansion, compressibility, elastic constants, and fundamental properties of atomic structure, particularly as applied to geophysical problems -Electron microscopy in support of physical and chemical studies -Computational methods in the study of the structure and properties of minerals -Mineral surfaces (experimental methods, structure and properties)
期刊最新文献
Temperature-dependent infrared spectroscopy of OH defects in Verneuil-grown corundum (α-Al2O3) Interaction of platinum with antimony-bearing compounds in NaF fluids at 800 °C and 200 MPA High-pressure synthesis of rhenium carbide Re3C under megabar compression High pressure and high temperature Brillouin scattering measurements of pyrope single crystals using flexible CO2 laser heating systems Thermodynamics of the α-FeOOH (goethite)-ScOOH solid solution
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1