Thermodynamic functions of barium and strontium zirconates from calorimetric measurements

Nagarajan, K.; Saha, Rafikul Ali; Babu, R.; Mathews, C.K.

doi:10.1016/0040-6031(85)87107-0

Cited by 53 publications

(13 citation statements)

References 3 publications

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“…The temperature dependence of the heat capacities of SrCeO 3 and SrZrO 3 determined by the enthalpy and scanning methods is shown in Figs. 3 and 4, together with literature data 30–35 . The experimental values for SrCeO 3 obtained in the present study well agree with the data of Cordfunke et al 30 .…”

Section: Resultssupporting

confidence: 92%

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Thermophysical Properties of Perovskite‐Type Strontium Cerate and Zirconate

Yamanaka

Kurosaki

Oyama

et al. 2005

Journal of the American Ceramic Society

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Polycrystalline samples of strontium series perovskite‐type oxides, SrCeO3 and SrZrO3, were prepared and the thermophysical properties were measured. The chemical compositions of the samples do not deviate from the stoichiometric composition. The oxygen‐to‐metal (O/M) ratios of SrCeO3 and SrZrO3 are 3.00±0.03 and 2.98±0.01, respectively. The average linear thermal expansion coefficients are 1.11 × 10−5 K−1 for SrCeO3 and 9.69 × 10−6 K−1 for SrZrO3 in the temperature range between 300 and 1000 K. The melting temperatures Tm of SrCeO3 and SrZrO3 are 2266 and 2883 K, respectively. The longitudinal and shear sound velocities were measured by an ultrasonic pulse–echo method at room temperature in air, which enables to evaluate the elastic moduli and Debye temperature. The heat capacity was measured by using a differential scanning calorimeter in high‐purity argon atmosphere. The thermal diffusivity was measured by a laser flash method in vacuum. The thermal conductivities of SrCeO3 and SrZrO3 at room temperature are 2.95 and 4.06 W·m−1·K−1, respectively.

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Section: Resultssupporting

confidence: 92%

“…The experimental values for SrZrO 3 obtained in the present study are slightly lower than those in literatures 33–35 . Three signals associated with the phase transitions are observed in our experimental data determined by the scanning methods.…”

Section: Resultscontrasting

confidence: 76%

Thermophysical Properties of Perovskite‐Type Strontium Cerate and Zirconate

Yamanaka

Kurosaki

Oyama

et al. 2005

Journal of the American Ceramic Society

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“…Each uranium-plutonium mixed oxide sample was dropped from the ambient to experimental temperature, between two a-alumina (SRM 720) reference samples supplied by NIST, USA. The experimental procedure adopted for measuring the enthalpy increment of the sample by the sandwich method has been described earlier [17].…”

Section: Methodsmentioning

confidence: 99%

“…SETARAM, France) used in the present study has been described elsewhere [17]. For carrying out calorimetric measurements on radioactive samples, the calorimeter has been attached to an argon atmosphere glove box, maintained at a negative pressure of 25 mm WG with respect to the ambient.…”

Section: Calorimetermentioning

confidence: 99%

Calorimetric measurements on uranium–plutonium mixed oxides

Kandan

Babu

Nagarajan

et al. 2004

Journal of Nuclear Materials

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“…The thermal diffusivity measurements were carried out over the temperature range from 573 to 1515 K for barium zirconate and cerate, and from 573 to 1425 K for barium uranate. The necessary heat capacity values were taken from the data reported earlier for these materials by our laboratory [11][12][13]. For the zireonate, the thermal diffusivity decreases gradually as the temperature is increased throughout the present temperature range.…”

Section: Methodsmentioning

confidence: 99%