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Calorimetric study of Zn13La

  • Masao Morishita EMAIL logo , Koichiro Koyama and Kouhei Tsuboki
Published/Copyright: February 8, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 95 Issue 8

Abstract

The thermodynamic properties of Zn13La were investigated by calorimetry. The standard entropy of formation at 298 K, ΔfS298° was determined from measuring the heat capacities, Cp, from near absolute zero (2 K) to 300 K by the relaxation method. The standard enthalpy of formation at 298 K, ΔfH298° was determined by solution calorimetry in hydrochloric acid solution. The standard Gibbs energy of formation at 298 K, ΔfG298° was determined from these data. The coefficient, γ, of the electronic term contributing to the heat capacity of Zn13La was similar to the composition average of the values of pure Zn and La, indicating that the 5d- and 4f-electron states for La are localized in the vicinity of the Fermi energy level.

Keywords: Zn13La; Calorimetry; Heat capacity; Enthalpy of formation; Gibbs energy of formation
Prof. Masao Morishita Department of Materials Science and Chemistry University of Hyogo 2167 Shosha, Himeji, 671-2201 Japan Tel.: +81 792 67 4915 Fax: +81 792 66 8868

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Received: 2003-11-24
Accepted: 2004-04-14
Published Online: 2022-02-08

© 2004 Carl Hanser Verlag, München

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  2. Articles Basic
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  13. Notifications/Mitteilungen
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https://doi.org/10.1515/ijmr-2004-0131
Keywords for this article
Zn13La; Calorimetry; Heat capacity; Enthalpy of formation; Gibbs energy of formation

Articles in the same Issue

  1. Frontmatter
  2. Articles Basic
  3. Thermodynamic modeling of the Ni–S system
  4. Some control mechanisms of spatial solidification in light alloys
  5. Density and excess volume of liquid copper, nickel, iron, and their binary alloys
  6. The absolute thermoelectric power of Nb–Mo alloys
  7. Articles Applied
  8. Structural and mechanical characteristics of ZA27-7 wt.% SiC composites produced by powder metallurgy techniques
  9. Calorimetric study of Zn13La
  10. Effect of grain size on the static strain aging of a ULC-bake hardening steel
  11. Kinetics of ferrite to Widmanstätten austenite transformation in a high-strength low-alloy steel revisited
  12. Transformation behavior of two Ni–Mn–Ga alloys
  13. Notifications/Mitteilungen
  14. Personal/Personelles
  15. News/Aktuelles
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