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Full-Text Articles in Physical Sciences and Mathematics
Systematic Elongation Of Thienyl Linkers And Their Effect On Optical And Electrochemical Properties In Carbazole-Bodipy Donor-Acceptor Systems, Alina Brzeczek, Katarzyna Piwowar, Wojciech Domagala, Mikotaj M. Mikotajczyk, Krzysztof Walczak, Pawel W. Wagner
Systematic Elongation Of Thienyl Linkers And Their Effect On Optical And Electrochemical Properties In Carbazole-Bodipy Donor-Acceptor Systems, Alina Brzeczek, Katarzyna Piwowar, Wojciech Domagala, Mikotaj M. Mikotajczyk, Krzysztof Walczak, Pawel W. Wagner
Australian Institute for Innovative Materials - Papers
Synthesis, spectral and electrochemical properties of a series of new panchromatic BODIPY donor-acceptor-donor derivatives, comprising carbazole conjugated with systematically elongated framework by thiophene-based linkers were investigated. It has been found that elongation of the π-system with one thiophene unit shifts the spectra toward near infrared, while incorporation of next thiophene derivatives has only limited influence on the lowest energy transition, causing no further shift of absorption maxima. Elongation of π-conjugation of the donor arm tunes the electron properties, influencing the ionization potential (IP) and electron affinity (EA) values of the molecules. The experimental results are supported by quantum chemical computations …
Β -Nmr Investigation Of The Depth-Dependent Magnetic Properties Of An Antiferromagnetic Surface, David L. Cortie, T Buck, M Dehn, V L. Karner, R F. Kiefl, C D. P Levy, R M. L Mcfadden, G D. Morris, I Mckenzie, M R. Pearson, Xiaolin Wang, W A. Macfarlane
Β -Nmr Investigation Of The Depth-Dependent Magnetic Properties Of An Antiferromagnetic Surface, David L. Cortie, T Buck, M Dehn, V L. Karner, R F. Kiefl, C D. P Levy, R M. L Mcfadden, G D. Morris, I Mckenzie, M R. Pearson, Xiaolin Wang, W A. Macfarlane
Australian Institute for Innovative Materials - Papers
By measuring the prototypical antiferromagnet α-Fe2O3, we show that it is possible to determine the static spin orientation and dynamic spin correlations within nanometers from an antiferromagnetic surface using the nuclear spin polarization of implanted 8Liþ ions detected with β-NMR. Remarkably, the firstorder Morin spin reorientation in single crystal α-Fe2O3 occurs at the same temperature at all depths between 1 and 100 nm from the (110) surface; however, the implanted nuclear spin experiences an increased 1=T1 relaxation rate at shallow depths revealing soft-surface magnons. The surface-localized dynamics decay towards the bulk with a characteristic length of ϵ ¼ 11 1 …
Improved Superconducting Properties In The Mg11b2 Low Activation Superconductor Prepared By Low-Temperature Sintering, Fang Cheng, Yongchang Liu, Zongqing Ma, M Shahriar Al Hossain, Mehmet Somer
Improved Superconducting Properties In The Mg11b2 Low Activation Superconductor Prepared By Low-Temperature Sintering, Fang Cheng, Yongchang Liu, Zongqing Ma, M Shahriar Al Hossain, Mehmet Somer
Australian Institute for Innovative Materials - Papers
Mg11B2 has a great application prospect in the superconducting coils for fusion reactor as the "low activation superconductors". The un-doped Mg11B2 and Cu-doped Mg11B2 bulks using 11B as a boron precursor were fabricated by low-temperature sintering in present work. It was found that the prepared Mg11B2 low activation superconductors exhibit better Jc performance than all of other Mg11B2 samples reported in previous studies. As for Cu doped Mg11B2, minor Cu addition can obviously improve the Mg11B2 grain crystallization and reduce the amount of MgO impurity. Hence, improved grain connectivity and higher Jc at low fields is obtained in Cu doped …