Particle size significantly affects the properties and therefore the potential applications of multiferroics. However, is there special particle size effect in BiFeO3, which has a spiral modulated spin structure? This is still under investigation for sub-5 nm BiFeO3. In this report, the structural, electronic and magnetic properties are investigated for chemically synthesized BiFeO3 nanoparticl...

There is interest in identifying novel materials for use in radioactive waste applications and studying their behavior under high pressure conditions. The mineral zirconolite (CaZrTi(2)O(7)) exists naturally in trace amounts in diamond-bearing deep-seated metamorphic/igneous environments, and it is also identified as a potential ceramic phase for radionuclide sequestration. However, it has been...

Complex microstructures of zircon recrystallisation have been discovered in igneous and metamorphic zircons from the Jack Hills Metasedimentary Belt Western Australia, granitic injection complex Harris north-west Scotland. Cathodoluminescence (CL), electron backscatter diffraction (EBSD) wavelength dispersive spectroscopy (WDS) analysis reveal that studied is often characterised by (1) translat...

Experimentally metasomatised monazite was studied in terms of preservation U-Pb and Th-Pb ages during alkali-bearing fluid-induced alteration over a broad range temperature conditions 250–750 °C. Starting materials for experiments included Burnet (Concordia age 1100.5 ± 11.6 Ma, 2?), albite, K-feldspar, biotite, muscovite, SiO2, CaF2, Na2Si2O5 H2O. Monazite from at 250–550 °C is partially repla...

Detrital zircon U–Pb ages are widely employed as an archive of geological processes through time. Changes in detrital age patterns within sediments reflect changes source areas that often related to tectonic and/or climatic processes. However, discrimination first-cycle and multi-cycle with primary crystalline secondary sedimentary sources, respectively, can be challenging using only crystallis...

Abstract The ultrahigh-pressure (UHP) whiteschists of the Brossasco-Isasca unit (Dora-Maira Massif, Western Alps) provide a natural laboratory in which to compare results from classical pressure (P)–temperature (T) determinations through thermodynamic modelling with emerging field elastic thermobarometry. Phase equilibria and chemical composition three garnet megablasts coupled Zr-in-rutile the...

The Lianyunshan Complex (LYSC) is a Nb-Ta-Li-Be rare metals mining area in northeastern Hunan, South China. deposit composed of granite-type rare-metal pegmatite mineralization that occurs as dikes around the LYSC. present study examines genetic relationship, fluid evolution, and metallogeny co-developed ore-free (OFP) ore-bearing (OBP) granite-related pegmatite-type Nb-Ta deposits Four mineral...