Anisotropic Thermal Expansion of Single Crystals of Thallium, Yttrium, Beryllium, and Zinc at Low Temperatures

1962 ◽  
Vol 33 (1) ◽  
pp. 219-224 ◽  
Author(s):  
R. W. Meyerhoff ◽  
J. F. Smith
Keyword(s):  
Thermal Expansion ◽  
Single Crystals ◽  
Low Temperatures ◽  
Anisotropic Thermal Expansion

scholarly journals Anisotropic thermal expansion of monoclinic potassium lutetium tungstate single crystals

2005 ◽  
Vol 98 (4) ◽  
pp. 046101 ◽  
Author(s):  
Kunpeng Wang ◽  
Jianxiu Zhang ◽  
Jiyang Wang ◽  
Huaijin Zhang ◽  
Zhengping Wang ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Single Crystals ◽  
Anisotropic Thermal Expansion

scholarly journals Anisotropic thermal expansion and magnetostriction of YNi2B2C single crystals

2006 ◽  
Vol 18 (35) ◽  
pp. 8353-8365 ◽  
Author(s):  
S L Bud’ko ◽  
G M Schmiedeshoff ◽  
G Lapertot ◽  
P C Canfield
Keyword(s):  
Thermal Expansion ◽  
Single Crystals ◽  
Anisotropic Thermal Expansion

scholarly journals Extraordinary anisotropic thermal expansion in photosalient crystals

IUCrJ ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Khushboo Yadava ◽  
Gianpiero Gallo ◽  
Sebastian Bette ◽  
Caroline Evania Mulijanto ◽  
Durga Prasad Karothu ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Solid State ◽  
Metal Complexes ◽  
Single Crystals ◽  
Room Temperature ◽  
Volumetric Thermal Expansion ◽  
Anisotropic Thermal Expansion ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Multifunctional Properties

Although a plethora of metal complexes have been characterized, those having multifunctional properties are very rare. This article reports three isotypical complexes, namely [Cu(benzoate)L 2], where L = 4-styrylpyridine (4spy) (1), 2′-fluoro-4-styrylpyridine (2F-4spy) (2) and 3′-fluoro-4-styrylpyridine (3F-4spy) (3), which show photosalient behavior (photoinduced crystal mobility) while they undergo [2+2] cycloaddition. These crystals also exhibit anisotropic thermal expansion when heated from room temperature to 200°C. The overall thermal expansion of the crystals is impressive, with the largest volumetric thermal expansion coefficients for 1, 2 and 3 of 241.8, 233.1 and 285.7 × 10−6 K−1, respectively, values that are comparable to only a handful of other reported materials known to undergo colossal thermal expansion. As a result of the expansion, their single crystals occasionally move by rolling. Altogether, these materials exhibit unusual and hitherto untapped solid-state properties.

Anisotropic thermal expansion and phase transitions in Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 single crystals

2006 ◽  
Vol 382 (1-2) ◽  
pp. 205-208 ◽  
Author(s):  
Yanxue Tang ◽  
Lei Chen ◽  
Xiangyong Zhao ◽  
Weiqing Jin ◽  
Haosu Luo
Keyword(s):  
Thermal Expansion ◽  
Phase Transitions ◽  
Single Crystals ◽  
Anisotropic Thermal Expansion

The Design and Use of Special-Purpose Attachments for the Horizontal Diffractometer

1963 ◽  
Vol 7 ◽  
pp. 302-313
Author(s):  
William L. Baun ◽  
John J. Renton
Keyword(s):  
Thermal Expansion ◽  
Low Temperature ◽  
Single Crystals ◽  
Low Temperatures ◽  
Coefficient Of Thermal Expansion ◽  
Semicrystalline Polymers ◽  
Organic Liquids ◽  
Crystalline Materials ◽  
Full Circle ◽  
Beryllium Window

AbstractSeveral special-purpose attachments have been designed and built for the Siemens horizontal diffractometer. Design details and experimental results are shown for the following equipment: (1) Low-temperature mount for poly crystalline materials—examples are shown illustrating identification of organic liquids crystallized at low temperatures, and results are presented on coefficient of thermal expansion of alloys in the binary system copper—platinum from −185 to 25°C. (2) Low-temperature mount for single-crystal studies—this design allows recording of higher-level layer lines by use of a domed beryllium window. Illustrations are shown for organic single crystals and for organic liquids crystallized in the lowtemperature mount. (3) Focusing attachment—this attachment uses a curved specimen mounted on the focusing circle (Seeman-Bohlin mounting). Comparisons of dispersion are made and examples such as the (400) reflection from molybdenum are shown using both curved and flat specimens. (4) Full-circle goniometer—this device has been used primarily for determining distribution of intensity in amorphous and semicrystalline polymers, but is applicable to study of single crystals. Examples of both of these applications are discussed.

THERMAL EXPANSION OF SINGLE CRYSTALS OF ZINC AT LOW TEMPERATURES

1965 ◽  
Vol 43 (7) ◽  
pp. 1328-1333 ◽  
Author(s):  
D. A. Channing ◽  
S. Weintroub
Keyword(s):  
Experimental Data ◽  
Thermal Expansion ◽  
Single Crystals ◽  
Low Temperatures ◽  
Linear Thermal Expansion ◽  
Optical Interference ◽  
Temperature Range ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Good Agreement

The linear thermal expansion coefficients αψ of two single crystals of Zn of orientations ψ = 10.8° and 63.9 ° with the hexad axis were measured over the temperature range of about 20–270 °K using an absolute Fizeau optical interference technique. The two principal coefficients, [Formula: see text] and [Formula: see text], corresponding to ψ = 0° and 90 ° respectively, were calculated from the Voigt relation, and their values are compared with previously reported experimental data. Above 60 °K there is good agreement with previous work, and below 60 °K the results confirm, in general, the data obtained by McCammon and White. The Grüneisen parameter γ is essentially constant at about 2.1 in the range 100–270 °K, but below 100 °K γ rises appreciably with decreasing temperature and reaches the value of about 3.5 at 20 °K.

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