Showing 2014 · cond-mat.mtrl-sciShow all

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cond-mat.mtrl-sci2014★ 34 cited

Coexistence pressure for a martensitic transformation from theory and experiment: revisiting the bcc-hcp transition of iron under pressure

Nikolai A. Zarkevich, Duane D. Johnson

The coexistence pressure of two phases is a well-defined point at fixed temperature. In experiment, however, due to non-hydrostatic stresses and a stress-dependent potential energy…

cond-mat.mtrl-sci2014★ 21 cited

Physical properties of VTiO (0 x 0.187) single crystals

Tai Kong, Morgan W. Masters, Sergey L. Bud'ko +1

Free standing, low strain, single crystals of pure and titanium doped VO were grown out of an excess of VO using high temperature solution growth techniques. At $…

cond-mat.mtrl-sci2014★ 32 cited

Ultrafast Probes of Nonequilibrium Hole Spin Relaxation in Ferromagnetic Semiconductor GaMnAs

Aaron Patz, Tianqi Li, Xinyu Liu +3

We directly measure the hole spin lifetime in ferromagnetic GaMnAs via time- and polarization-resolved spectroscopy. Below the Curie temperature Tc, an ultrafast photoexcitation wi…

cond-mat.mtrl-sci2014★ 167 cited

A new spin gapless semiconductor: quaternary Heusler CoFeCrGa alloy

Lakhan Bainsla, A. I. Mallick, M. Manivel Raja +5

Despite a plethora of materials suggested for spintronic applications, a new class of materials has emerged, namely spin gapless semiconductors (SGS), that offers potentially more…

cond-mat.mtrl-sci2014★ 45 cited

NiTi shape-memory transformations: minimum-energy pathways between austenite, martensites, and kinetically-limited intermediate states

N. A. Zarkevich, D. D. Johnson

NiTi is the most used shape-memory alloy, nonetheless, a lack of understanding remains regarding the associated structures and transitions, including their barriers. Using a genera…

cond-mat.mtrl-sci2014★ 375 cited

Surface Engineering for Phase Change Heat Transfer: A Review

Daniel Attinger, Christophe Frankiewicz, Amy R. Betz +5

Among numerous challenges to meet the rising global energy demand in a sustainable manner, improving phase change heat transfer has been at the forefront of engineering research fo…

cond-mat.mtrl-sci2014

Coupled magnetic and electric hysteresis in the multiferroic double perovskite Lu2MnCoO6

Vivien S. Zapf, B. G. Ueland, Mark Laver +10

We investigate a magnetic hysteresis loop with a remanent moment that couples to electric polarization to create coupled hysteretic multiferroic behavior in Lu2MnCoO6. Measurements…

cond-mat.mtrl-sci2014★ 39 cited

Antiferromagnetism of ZnVO(PO and the dilution with Ti

A. Yogi, N. Ahmed, R. Nath +6

We report static and dynamic properties of the antiferromagnetic compound Zn(VO)(PO), and the consequences of non-magnetic Ti doping at the V site.…

cond-mat.mtrl-sci2014★ 10 cited

Green's function multiple-scattering theory with a truncated basis set: An Augmented-KKR formalism

Aftab Alam, Suffian N. Khan, Andrei Smirnov +2

Korringa-Kohn-Rostoker (KKR) Green's function, multiple-scattering theory is an efficient site-centered, electronic-structure technique for addressing an assembly of scatterers…

cond-mat.mtrl-sci2014★ 36 cited

Magnetic and transport properties of i--Cd icosahedral quasicrystals ( = Y, Gd-Tm)

Tai Kong, Sergey L. Bud'ko, Anton Jesche +4

We present a detailed characterization of the recently discovered i--Cd ( = Y, Gd-Tm) binary quasicrystals by means of x-ray diffraction, temperature-dependent dc and ac magn…

cond-mat.mtrl-sci2014★ 5 cited

The Effect of Cesium Carbonate on PCBM Aggregation in Films

William R. Lindemann, Wenjie Wang, Fadzai Fungura +3

Surface-pressure isotherms, X-ray reflectivity and X-ray near-total reflection fluorescence were used to study the properties of 1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C (…

cond-mat.mtrl-sci2014★ 14 cited

Elastocaloric response of PbTiO3 predicted from a first-principles effective Hamiltonian

Jordan A. Barr, Scott P. Beckman, Takeshi Nishimatsu

A first-principles based effective Hamiltonian is used within a molecular dynamics simulation to study the elastocaloric effect in PbTiO3. It is found that the transition temperatu…

cond-mat.mtrl-sci2014★ 30 cited

What is the stable atomic structure of NiTi austenite?

Nikolai A. Zarkevich, Duane D. Johnson

Nitinol (NiTi), the most widely used shape-memory alloy, exhibits an austenite phase that has yet to be identified. The usually assumed austenite structure is cubic B2, which has i…

cond-mat.mtrl-sci2014★ 49 cited

Single crystal growth from light, volatile, and reactive materials using lithium and calcium flux

Anton Jesche, Paul C. Canfield

We present a method for the solution growth of single crystals from reactive Li and Ca melts and its application to the synthesis of several, representative compounds. Among these,…