Low temperature structural anomalies arising from competing exchange interactions in pyrochlore Nd2Ru2O7 probed by XRD and EXAFS

2015 ◽  
Vol 17 (36) ◽  
pp. 23667-23673 ◽  
Author(s):  
Shi-Wei Chen ◽  
Shao-Wei Fu ◽  
Chih-Wen Pao ◽  
Jenn-Min Lee ◽  
Shin-An Chen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Structural Parameters ◽  
Exchange Interactions ◽  
Exafs Data ◽  
Structural Anomalies

Quantitative structural parameters of pyrochlore Nd2Ru2O7, with temperature dependence, have been derived upon fitting XRD and EXAFS data.

The Microscopic Structure Of Shallow Donors In Silicon Carbide

1996 ◽  
Vol 442 ◽  
Author(s):  
J.-M. Spaeth ◽  
S. Greulich-Weber ◽  
M. März ◽  
E. N. Kalabukhova ◽  
S. N. Lukin
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Temperature Dependence ◽  
Double Resonance ◽  
Epr Spectra ◽  
Electron Nuclear Double Resonance ◽  
Paramagnetic Resonance ◽  
Vacancy Pair ◽  
Temperature Spectra ◽  
Electron Paramagnetic

AbstractThe electronic structure of nitrogen donors in 6H-, 4H- and 3C-SiC is investigated by measuring the nitrogen hyperfine (hf) interactions with electron nuclear double resonance (ENDOR) and the temperature dependence of the hf split electron paramagnetic resonance (EPR) spectra. Superhyperfine (shf) interactions with many shells of 13C and 29Si were measured in 6H-SiC. The hf and shf interactions are discussed in the framework of effective mass theory. The temperature dependence is explained with the thermal occupation of the lowest valley-orbit split A1 and E states. It is proposed that the EPR spectra of P donors observed previously in neutron transmuted 6H-SiC at low temperature (<10K) and high temperature (>60K) are all due to substitutional P donors on the two quasi-cubic and hexagonal Si sites, whereby at low temperature the E state is occupied and at high temperature the A1 state. The low temperature spectra are thus thought not to be due to P-vacancy pair defects as proposed previously.

scholarly journals On the stress and temperature dependence of low temperature and high stress shear creep in Ni-base single crystal superalloys

2020 ◽  
Vol 795 ◽  
pp. 139961
Author(s):  
D. Bürger ◽  
A. Dlouhý ◽  
K. Yoshimi ◽  
G. Eggeler
Keyword(s):  
Low Temperature ◽  
Single Crystal ◽  
Temperature Dependence ◽  
High Stress ◽  
Shear Creep

The low temperature dependence of magnetization of as-deposited Fe-Hf-C-N nanocrystalline thin films

1999 ◽  
Vol 12 (5-8) ◽  
pp. 1097-1102 ◽  
Author(s):  
K.S. Kirn ◽  
Y.H. Seong ◽  
S.C. Yu ◽  
S.H. Han ◽  
H.J. Kim
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Temperature Dependence ◽  
Nanocrystalline Thin Films

Linear temperature dependence of low temperature pyroelectric coefficient

1981 ◽  
Vol 42 (4) ◽  
pp. 323-328 ◽  
Author(s):  
Y. Ohmura ◽  
P.J. Grout ◽  
N.H. March
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Pyroelectric Coefficient ◽  
Linear Temperature Dependence ◽  
Linear Temperature

Low temperature dependence three-axis accelerometer for high temperature environments with temperature control of SOI piezoresistors

2003 ◽  
Vol 104 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Kyung Il Lee ◽  
Hidekuni Takao ◽  
Kazuaki Sawada ◽  
Makoto Ishida
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Temperature Dependence ◽  
Temperature Control

scholarly journals Temperature dependence of the dielectric function and critical points of α-SnS from 27 to 350 K

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hoang Tung Nguyen ◽  
Van Long Le ◽  
Thi Minh Hai Nguyen ◽  
Tae Jung Kim ◽  
Xuan Au Nguyen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Dielectric Function ◽  
Spectral Energy ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Temperature Dependences ◽  
Exciton Effect ◽  
Bose Einstein ◽  
Temperature Gradient Method

Abstract We report the temperature dependence of the dielectric function ε = ε1 + iε2 and critical point (CP) energies of biaxial α-SnS in the spectral energy region from 0.74 to 6.42 eV and temperatures from 27 to 350 K using spectroscopic ellipsometry. Bulk SnS was grown by temperature gradient method. Dielectric response functions were obtained using multilayer calculations to remove artifacts due to surface roughness. We observe sharpening and blue-shifting of CPs with decreasing temperature. A strong exciton effect is detected only in the armchair direction at low temperature. New CPs are observed at low temperature that cannot be detected at room temperature. The temperature dependences of the CP energies were determined by fitting the data to the phenomenological expression that contains the Bose–Einstein statistical factor and the temperature coefficient for describing the electron–phonon interaction.

High-Quality-Factor and Low-Temperature-Dependence SMR FBAR Based on BST Using MOD Method

2017 ◽  
Vol 64 (2) ◽  
pp. 452-462 ◽  
Author(s):  
Almonir Abdulgader Mansour ◽  
Thottam S. Kalkur
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Quality Factor ◽  
High Quality Factor ◽  
High Quality

Studies on the temperature dependence of isotope effects arising in low-temperature acetaldehyde photolysis

1980 ◽  
Vol 76 (3) ◽  
pp. 475-478 ◽  
Author(s):  
V.V. Pervukhin ◽  
A.A. Obynochny ◽  
R.Z. Sagdeev
Keyword(s):  
Low Temperature ◽  
Temperature Dependence ◽  
Isotope Effects
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