Stability and thermodynamic functions of lanthanum nickelates

M. Zinkevich; N. Solak; H. Nitsche; M. Ahrens; F. Aldinger

doi:10.1016/j.jallcom.2006.08.047

Stability and thermodynamic functions of lanthanum nickelates

M. Zinkevich^*, N. Solak, H. Nitsche, M. Ahrens, F. Aldinger

^*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name??? › Makale › bilirkişi

51 Atıf (Scopus)

Özet

Enthalpy of formation, entropy, and heat capacity of La₃Ni₂O₇, La₄Ni₃O₁₀, and LaNiO₃, which belong to the Ruddlesden-Popper homologous series were investigated using equilibration with the gas phase, adiabatic calorimetry, and differential scanning calorimetry. All three compounds remain almost stoichiometric in their stability range, while the established energetic trends are consistent with decreasing thermal stability in the order La₃Ni₂O₇ > La₄Ni₃O₁₀ > LaNiO₃. The enthalpy of the structural phase transition in La₃Ni₂O₇ at 490 K was determined. The derived thermodynamic functions were used to construct the phase stability diagram of the La-Ni-O system in terms of temperature and oxygen pressure.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	92-99
Sayfa sayısı	8
Dergi	Journal of Alloys and Compounds
Hacim	438
Basın numarası	1-2
DOI'lar	https://doi.org/10.1016/j.jallcom.2006.08.047
Yayın durumu	Yayınlandı - 12 Tem 2007
Harici olarak yayınlandı	Evet

Finansman

The authors thank to Mr. G. Kaiser for technical assistance. One of the authors (N.S.) is grateful to the International Max Planck Research School for Advanced Materials (IMPRS-AM) for financial support.

Finansörler	Finansör numarası
International Max Planck Research School for Advanced Materials

Belgeye Erişim

10.1016/j.jallcom.2006.08.047

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

@article{c4f31b77294c44d29ffd6f739e8d70fc,

title = "Stability and thermodynamic functions of lanthanum nickelates",

abstract = "Enthalpy of formation, entropy, and heat capacity of La3Ni2O7, La4Ni3O10, and LaNiO3, which belong to the Ruddlesden-Popper homologous series were investigated using equilibration with the gas phase, adiabatic calorimetry, and differential scanning calorimetry. All three compounds remain almost stoichiometric in their stability range, while the established energetic trends are consistent with decreasing thermal stability in the order La3Ni2O7 > La4Ni3O10 > LaNiO3. The enthalpy of the structural phase transition in La3Ni2O7 at 490 K was determined. The derived thermodynamic functions were used to construct the phase stability diagram of the La-Ni-O system in terms of temperature and oxygen pressure.",

keywords = "Calorimetry, Electrode materials, Oxide materials, Thermal analysis, Thermodynamic modeling",

author = "M. Zinkevich and N. Solak and H. Nitsche and M. Ahrens and F. Aldinger",

year = "2007",

month = jul,

day = "12",

doi = "10.1016/j.jallcom.2006.08.047",

language = "English",

volume = "438",

pages = "92--99",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Stability and thermodynamic functions of lanthanum nickelates

AU - Zinkevich, M.

AU - Solak, N.

AU - Nitsche, H.

AU - Ahrens, M.

AU - Aldinger, F.

PY - 2007/7/12

Y1 - 2007/7/12

N2 - Enthalpy of formation, entropy, and heat capacity of La3Ni2O7, La4Ni3O10, and LaNiO3, which belong to the Ruddlesden-Popper homologous series were investigated using equilibration with the gas phase, adiabatic calorimetry, and differential scanning calorimetry. All three compounds remain almost stoichiometric in their stability range, while the established energetic trends are consistent with decreasing thermal stability in the order La3Ni2O7 > La4Ni3O10 > LaNiO3. The enthalpy of the structural phase transition in La3Ni2O7 at 490 K was determined. The derived thermodynamic functions were used to construct the phase stability diagram of the La-Ni-O system in terms of temperature and oxygen pressure.

AB - Enthalpy of formation, entropy, and heat capacity of La3Ni2O7, La4Ni3O10, and LaNiO3, which belong to the Ruddlesden-Popper homologous series were investigated using equilibration with the gas phase, adiabatic calorimetry, and differential scanning calorimetry. All three compounds remain almost stoichiometric in their stability range, while the established energetic trends are consistent with decreasing thermal stability in the order La3Ni2O7 > La4Ni3O10 > LaNiO3. The enthalpy of the structural phase transition in La3Ni2O7 at 490 K was determined. The derived thermodynamic functions were used to construct the phase stability diagram of the La-Ni-O system in terms of temperature and oxygen pressure.

KW - Calorimetry

KW - Electrode materials

KW - Oxide materials

KW - Thermal analysis

KW - Thermodynamic modeling

UR - http://www.scopus.com/inward/record.url?scp=34247579730&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2006.08.047

DO - 10.1016/j.jallcom.2006.08.047

M3 - Article

AN - SCOPUS:34247579730

SN - 0925-8388

VL - 438

SP - 92

EP - 99

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Stability and thermodynamic functions of lanthanum nickelates

Özet

Finansman

Belgeye Erişim

Diğer Dosyalar ve Linkler

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