Heat Capacity of Rare-Earth Stannates in the Range 350-1000 K

被引：20

作者：

Denisova, L. T. ^{[1
]}

Kargin, Yu. F. ^{[2
]}

Denisov, V. M. ^{[1
]}

机构：

[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660049, Russia

[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119334, Russia

来源：

INORGANIC MATERIALS | 2017年 / 53卷 / 09期

关键词：

rare-earth stannates; structure; high-temperature heat capacity; thermodynamic functions; HYDROTHERMAL SYNTHESIS; IONIC-RADII; PYROCHLORES; LN; NANOCRYSTALS; TOLERANCE; TITANATES; OXIDATION; OXIDES; FIELD;

D O I：

10.1134/S0020168517090059

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

R2Sn2O7 (R = Pr-Lu) rare-earth stannates with the pyrochlore structure have been synthesized by solid-state reactions, by firing stoichiometric mixtures of SnO2 and R2O3 in air at 1473 K. The high-temperature heat capacity of the rare-earth stannates has been determined by differential scanning calorimetry in the temperature range 350 to 1000 K, and the Raman spectra of polycrystalline Tb2Sn2O7 and Dy2Sn2O7 samples have been measured.

引用

页码：956 / 961

页数：6

共 48 条

[1] Thermodynamic Properties of Geometrically Frustrated S=1/2 XY Antiferromagnet Er2Sn2O7 [J].

Al Ghamdi, N. ;

Orendacova, A. ;

Pavlik, V. ;

Orendac, M. .

ACTA PHYSICA POLONICA A, 2014, 126 (01) :264-265

[2] Magnetic ground-state of strongly frustrated pyrochlore anti-ferromagnet Er2Sn2O7 [J].

Alam, J. ;

Jana, Y. M. ;

Biswas, A. Ali .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 361 :175-181

[3]

Bondah-Jagalu V, 2001, CAN J PHYS, V79, P1381, DOI 10.1139/cjp-79-11/12-1381

[4] Pyrochlore Structural Chemistry: Predicting the Lattice Constant by the Ionic Radii and Electronegativities of the Constituting Ions [J].

Brik, Mikhail G. ;

Srivastava, Alok M. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2012, 95 (04) :1454-1460

[5] The tolerance factors of the pyrochlore crystal structure [J].

Cai, Lu ;

Arias, Alex L. ;

Nino, Juan C. .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (11) :3611-3618

[6] Evidence from thermodynamic measurements for a singlet crystal-field ground state in pyrochlore Tb2Sn2O7 and Tb2Ti2O7 [J].

Chapuis, Y. ;

Yaouanc, A. ;

de Reotier, P. Dalmas ;

Marin, C. ;

Vanishri, S. ;

Curnoe, S. H. ;

Vaju, C. ;

Forget, A. .

PHYSICAL REVIEW B, 2010, 82 (10)

[7] Structural and bonding properties of stannate pyrochlores: A density functional theory investigation [J].

Chen, Z. J. ;

Xiao, H. Y. ;

Zu, X. T. ;

Wang, L. M. ;

Gao, Fei ;

Lian, Jie ;

Ewing, Rodney C. .

COMPUTATIONAL MATERIALS SCIENCE, 2008, 42 (04) :653-658

[8]

Cheng H., 2008, NANOTECHNOLOGY, V19

[9] METAL STANNATES AND THEIR ROLE AS POTENTIAL GAS-SENSING ELEMENTS [J].

COLES, GSV ;

BOND, SE ;

WILLIAMS, G .

JOURNAL OF MATERIALS CHEMISTRY, 1994, 4 (01) :23-27

[10] Thermal physical properties of Bi4Ge3O12 single crystals [J].

Denisov, V. M. ;

Denisova, L. T. ;

Irtyugo, L. A. ;

Biront, V. S. .

PHYSICS OF THE SOLID STATE, 2010, 52 (07) :1362-1365

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