Journal ArticleDOI
Heat capacity, third-law entropy, and low-temperature physical behavior of bulk hematite (α-Fe2O3)
TLDR
In this paper, the constant pressure heat capacity of a bulk hematite powder was measured using a Quantum Design physical properties measurement system (PPMS) and the results showed good precision and agreed well with measurements reported by Westrum and Gronvold.About:
This article is published in The Journal of Chemical Thermodynamics.The article was published on 2010-09-01. It has received 21 citations till now. The article focuses on the topics: Morin transition & Standard molar entropy.read more
Citations
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Journal ArticleDOI
Lattice vacancies responsible for the linear dependence of the low-temperature heat capacity of insulating materials
TL;DR: In this article, the authors proposed a theory that justifies a linear heat capacity as a result of lattice vacancies, and provided measured values and data from the literature to support their arguments.
Journal ArticleDOI
Magnetic and thermodynamic properties of nanosized Zn ferrite with normal spinal structure synthesized using a facile method.
TL;DR: Normal spinel zinc ferrite nanoparticles (NPs) with zero net magnetization were synthesized by a facile coprecipitation method in which two kinds of organic alkali, namely, 1-amino-2-propanol and bis(2-hydroxypropyl)-amine (DIPA), were used.
Journal ArticleDOI
A facile peroxo-precursor synthesis method and structure evolution of large specific surface area mesoporous BaSnO3
Chuande Huang,Chuande Huang,Xiaodong Wang,Quan Shi,Xin Liu,Yan Zhang,Fei Huang,Fei Huang,Tao Zhang +8 more
TL;DR: A facile and efficient strategy for synthesizing mesoporous BaSnO3 with a surface area as large as 67 m(2)/g using a peroxo-precursor decomposition procedure is proposed and may have a potential to greatly promote the technological applications of this kind of functional material in the area of chemical sensors, NOx storage, and dye-sensitized solar cells.
Journal ArticleDOI
Entropy change linked to the magnetic field induced Morin transition in Hematite nanoparticles
J. M. Pastor,José Ignacio Pérez-Landazábal,Cristina Gomez-Polo,Vicente Recarte,S. Larumbe,Rubén Santamarta,M. Fernandes Silva,E.A. Gómez Pineda,A.A. Winkler Hechenleitner,M. K. Lima +9 more
TL;DR: In this paper, the first order Morin transition has been analyzed as a function of the temperature and applied magnetic field in Hematite nanoparticles, and the change of entropy has been estimated on the basis of Clausius-Clapeyron type equation.
Journal ArticleDOI
Low temperature heat capacity Study of Fe(PO3)3 and Fe2P2O7
TL;DR: In this article, the heat capacities of two iron phosphates, Fe(PO3)3 and Fe2P2O7, have been measured over the temperature range from (2 to 300) K using the heat capacity option of a Quantum Design Physical Property Measurement System (PPMS).
References
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Book
The iron oxides: structure, properties, reactions, occurrences and uses.
R. M. Cornell,Udo Schwertmann +1 more
TL;DR: In this article, the authors introduce the concept of iron oxides and their properties, including surface chemistry and Colloidal stability, as well as their properties in terms of surface area and porosity.
Journal ArticleDOI
Neutron Diffraction Study of Mesoporous and Bulk Hematite, α-Fe2O3
TL;DR: In this paper, variable temperature neutron diffraction was carried out on mesoporous α-Fe2O3 (hematite) with a mean pore diameter of 38.5 A.
Journal ArticleDOI
Low-temperature heat capacity of metals
TL;DR: The low-temperature heat capacities of transition metals and alloys were reviewed by Heiniger, Bucher, and Muller in 1966, with particular emphasis on the dependence of the electronic heat capacity on the number of conduction electrons.
Book
Chemical Thermodynamics: Principles and Applications
TL;DR: In this article, the authors present a thorough development of the principles of thermodynamics, an old science to which the authors include the most modem applications, along with those of importance in developing the science and those of historical interest.
Journal ArticleDOI
Thermodynamics of Fe oxides: Part I. Entropy at standard temperature and pressure and heat capacity of goethite (α-FeOOH), lepidocrocite (γ-FeOOH), and maghemite (γ-Fe2O3)
Juraj Majzlan,B. E. Lang,Rebecca Stevens,Alexandra Navrotsky,Brian F. Woodfield,Juliana Boerio-Goates +5 more
TL;DR: In this paper, the heat capacities of goethite, lepidocrocite, and maghemite were measured from below liquid helium temperature up to their decomposition temperatures by a combination of adiabatic, semi-adiabatic and differential scanning calorimetry.