✦ LIBER ✦

Molar heat capacity and thermodynamic functions of the type II antiferromagnet MnO

✍ Scribed by Jennifer L. Shapiro; Brian F. Woodfield; Rebecca Stevens; Juliana Boerio-Goates; Michael L. Wilson

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 283 KB
Volume: 31
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.1998.0479

No coin nor oath required. For personal study only.

✦ Synopsis

The heat capacity of a polycrystalline sample of MnO was measured from T ≈ 1 K to T ≈ 400 K using two different experimental apparatuses. Features revealed by the data include a hyperfine contribution due to the Mn nuclei, a T 2 temperature dependence at low temperatures due to the type II antiferromagnetic magnon contribution, and a sharp but well-defined antiferromagnetic transition with T N = 117.7095 K. The third-law entropy at T = 298.15 K, 298.15 0 S o m , calculated from these heat capacities is 59.02 J•K -1 •mol -1 , which is 1.2 per cent lower than the previously accepted value. Revised values for f H o m and f G o m of MnO are tabulated up to T = 950 K.

📜 SIMILAR VOLUMES

Molar heat capacity and thermodynamic fu

Molar heat capacity and thermodynamic functions of zirconolite CaZrTi2O7

✍ B.F. Woodfield; J. Boerio-Goates; J.L. Shapiro; R.L. Putnam; A. Navrotsky 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 138 KB

Zirconolite (CaZrTi 2 O 7 ) has been proposed as a host phase for excess weapons plutonium, and the standard molar entropy 298.15 K 0 S o m and other derived thermodynamic functions are needed to describe it completely. The heat capacity of CaZrTi 2 O 7 has been measured from T ≈ 20 K to T ≈ 400 K w

The thermodynamics of formation, molar h

The thermodynamics of formation, molar heat capacity, and thermodynamic functions ofZrTiO4(cr)

✍ Benjamin K. Hom; Rebecca Stevens; Brian F. Woodfield; Juliana Boerio-Goates; Rob 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 151 KB

Heat capacities and thermodynamic functi

Heat capacities and thermodynamic functions of the tellurates(IV) of aluminium, gallium, indium, and thallium

✍ G.G. Gospodinov 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 72 KB

Heat capacity and thermodynamic function

Heat capacity and thermodynamic functions of crystalline poly(p-phenylenebenzobisoxazole), the synthetic polymer with the highest Young's modulus

✍ Kazuya Saito; Yasuhiro Takahashi; Michio Sorai 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 124 KB 👁 2 views

The heat capacity of crystalline poly(p-phenylenebenzobisoxazole) was measured below room temperature by adiabatic calorimetry. The standard thermodynamic functions (enthalpy, entropy, and Gibbs energy) were established and tabulated. The temperature dependence of the heat capacity was compared with

Molar heat capacities and thermodynamic

Molar heat capacities and thermodynamic functions of CaHf Ti2O7( cr ) and CaZr0.26Hf0.74Ti2O7( cr)

✍ Rebecca Stevens; Benjamin K. Hom; Juliana Boerio-Goates; Brian F. Woodfield; Rob 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 164 KB

Heat capacities, enthalpy increments, ph

Heat capacities, enthalpy increments, phase transitions, and derived thermodynamic functions for the condensed phases of bicyclohexyl between the temperatures 6 K and 440 K

✍ R.D. Chirico; A.B. Cowell; W.D. Good; T.D. Klots; S.E. Knipmeyer; A. Nguyen; A.P 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 234 KB

Heat capacity and enthalpy measurements by using adiabatic calorimetry for temperatures Ž between 6 K and 440 K are reported for bicyclohexyl Chemical Abstracts registry number w x . 92-51-3 . The triple point temperature and the enthalpy of fusion were determined. Two different phase-change sequen