scholarly journals Mechanistic Insights into the Superexchange-Interaction-Driven Negative Thermal Expansion in CuO

2019 ◽  
Vol 141 (15) ◽  
pp. 6310-6317 ◽  
Author(s):  
Yuanpeng Zhang ◽  
Marshall McDonnell ◽  
Stuart A. Calder ◽  
Matthew G. Tucker
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Superexchange Interaction

scholarly journals Mechanistic insights into the superexchange-interaction-driven negative thermal expansion in CuO

2019 ◽  
Vol 75 (a1) ◽  
pp. a282-a282
Author(s):  
Yuanpeng Zhang ◽  
Marshall McDonnell ◽  
Stuart A. Calder ◽  
Matthew G. Tucker
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Superexchange Interaction

Polarization- and Strain-Mediated Control of Negative Thermal Expansion and Ferroelasticity in BiInO3–BiZn1/2Ti1/2O3

2021 ◽  
Vol 33 (4) ◽  
pp. 1498-1505
Author(s):  
Takumi Nishikubo ◽  
Takahiro Ogata ◽  
Lalitha Kodumudi Venkataraman ◽  
Daniel Isaia ◽  
Zhao Pan ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion

scholarly journals First-principles study of phonon anharmonicity and negative thermal expansion in ScF3

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Yusuke Oba ◽  
Terumasa Tadano ◽  
Ryosuke Akashi ◽  
Shinji Tsuneyuki
Keyword(s):  
Thermal Expansion ◽  
First Principles ◽  
Negative Thermal Expansion ◽  
First Principles Study

scholarly journals Negative thermal expansion property of Sm1-xCuxMnO3-δ

2021 ◽  
Author(s):  
YuCheng Li ◽  
Yang Zhang ◽  
Niu Zhang ◽  
Yongtian Li ◽  
Yifeng Wu
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Thermal Expansion Property ◽  
Expansion Property

scholarly journals Empty perovskites as Coulomb floppy networks: Entropic elasticity and negative thermal expansion

2021 ◽  
Vol 103 (13) ◽  
Author(s):  
Alexei V. Tkachenko ◽  
Igor A. Zaliznyak
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Entropic Elasticity

scholarly journals Negative thermal expansion in YbMn2Ge2 induced by the dual effect of magnetism and valence transition

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Yongqiang Qiao ◽  
Yuzhu Song ◽  
Andrea Sanson ◽  
Longlong Fan ◽  
Qiang Sun ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Intermetallic Compound ◽  
Cell Volume ◽  
Valence State ◽  
Unit Cell Volume ◽  
Negative Thermal Expansion ◽  
Combined Effect ◽  
Dual Effect ◽  
Valence Transition ◽  
Magnetovolume Effect

AbstractNegative thermal expansion (NTE) is an intriguing property, which is generally triggered by a single NTE mechanism. In this work, an enhanced NTE (αv = −32.9 × 10−6 K−1, ΔT = 175 K) is achieved in YbMn2Ge2 intermetallic compound to be caused by a dual effect of magnetism and valence transition. In YbMn2Ge2, the Mn sublattice that forms the antiferromagnetic structure induces the magnetovolume effect, which contributes to the NTE below the Néel temperature (525 K). Concomitantly, the valence state of Yb increases from 2.40 to 2.82 in the temperature range of 300–700 K, which simultaneously causes the contraction of the unit cell volume due to smaller volume of Yb3+ than that of Yb2+. As a result, such combined effect gives rise to an enhanced NTE. The present study not only sheds light on the peculiar NTE mechanism of YbMn2Ge2, but also indicates the dual effect as a possible promising method to produce enhanced NTE materials.

Nanoparticle Superlattices with Negative Thermal Expansion (NTE) Coefficients

2021 ◽  
Author(s):  
Hyeong Jin Kim ◽  
Wenjie Wang ◽  
Surya Mallapragada ◽  
Alex Travesset ◽  
David Vaknin
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Nanoparticle Superlattices

Magnetoelastic coupling, negative thermal expansion, and two-dimensional magnetic excitations in FeAs

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
J. L. Niedziela ◽  
L. D. Sanjeewa ◽  
A. A. Podlesnyak ◽  
L. DeBeer-Schmitt ◽  
S. J. Kuhn ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Two Dimensional ◽  
Magnetic Excitations ◽  
Magnetoelastic Coupling

scholarly journals Energy transfer triggered multicolor emissions in Tb3+/Eu3+-coacitivated Y2Mo3O12 negative thermal expansion micropartices for dual-channel tunable luminescent thermometer

2021 ◽  
Author(s):  
Peng Du ◽  
Laihui Luo ◽  
Yafei Hou ◽  
Weiping Li
Keyword(s):  
Thermal Expansion ◽  
Energy Transfer ◽  
Negative Thermal Expansion ◽  
Thermal Quenching ◽  
High Quality ◽  
Dual Channel ◽  
Color Tunable ◽  
Rational Control

Rational control of thermal quenching performance is crucial for achieving high quality luminescent thermometer. Herein, we report the Tb3+/Yb3+-coactivated Y2Mo3O12 (YMO) negative thermal expansion (NTE) microparticles with color-tunable emissions. Irradiated...

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