In this study, a series of manganese [Mn]-doped zinc oxide [ZnO] hierarchical microspheres [HMSs] are prepared by hydrothermal method only using zinc acetate and manganese acetate as precursors and ethylene glycol as solvent. X-ray diffraction indicates that all of the as-obtained samples including the highest Mn (7 mol%) in the crystal lattice of ZnO have a pure phase (hexagonal wurtzite struc...

The novel heterometallic polyoxotitanate cage [Ti18MnO30(OEt)20(MnPhen)3] (1), obtained by solvothermal reaction of Ti(OEt)4 with Mn(AcO)3·(H2O)2 and 1,10-phenanthroline (Phen) in EtOH, has a C3 symmetric core structure containing an interstitial tetrahedral Mn(II) ion and is surrounded by three Mn(II)(Phen) fragments. The molecular structure is retained in thin film electrodes of 1 deposited b...

The charge-spin interactions in multiferroic materials (e.g., BiFeO3) have attracted enormous attention due to their high potential for next generation information electronics. However, the weak and deficient manipulation of charge-spin coupling notoriously limits their commercial applications. To tailor the spontaneous charge and the spin orientation synergistically in BiFeO3 (BFO), in this re...

CuInS2 (CIS) quantum dots (QDs) have tunable photoluminescence (PL) behaviors in the visible and near infrared spectral range with markedly lower toxicity than the cadmium-based counterparts, making them very promising applications in light emitting and solar harvesting. However, there still remain material- and fabrication- related obstacles in realizing the high-performance CIS-based QDs with...

The effects of transition metals on the hydrophobicity of nano–structured layered double hydroxides (LDHs) and the compatibility of LDHs/ethylene vinyl acetate (EVA) composites have seldom been reported. NiMgAl–LDHs slightly surface–modified with stearate and doped with transition metal cations (Mn2+, Co2+, Cu2+, Zn2+) are investigated. Compared to the pure EVA, not only were the maximal degrad...

Pure LaMnO3 is an insulator. But, when doped with appropriate amount of doubly valenced impurities, it becomes a conductor retaining the ferromagnetism. Notion of double exchange has been devised to explain this phenomena. Along with this ferromagnetic conductivity, manganites show a variety of physical properties. Some of spin, charge, and orbital orderings are illustrated. Neutron scattering ...

We detail our studies on the transient propagation of coherent acoustic phonons (CAPs) in Mn-doped Cd1–xMnxTe [(Cd,Mn)Te] diluted-magnetic and pure CdTe semiconductors. The CAPs were generated by femtosecond optical pulses and then time-resolved using oneand two-color pump-probe spectroscopy. Intrinsic lifetimes on the order of at least tens of nanoseconds of CAP oscillations were observed in (...

The chirality associated with broken time reversal symmetry in magnetically doped topological insulators has important implications to the quantum transport phenomena. Here we report anomalous Hall effect studies Mn- and Cr-doped Bi$_2$Te$_3$ varied thickness doping content. By tracing of loops, find that Mn-type clockwise is strengthened by reduction film thickness, which opposite Cr-type coun...