Herak M.,Institute Za Fiziku
Solid State Communications | Year: 2011
A combination of highly sensitive torque magnetometry in low magnetic fields and a phenomenological approach to magnetic anisotropy is used to probe the symmetry of the antiferromagnetically ordered state of spin S=1/2 system Cu3TeO6. The results show that the ordered state has four antiferromagnetic domains with spin axis in the 〈1±1±1〉 directions, in agreement with the previously reported neutron measurements. These results show that this approach, previously applied to ferromagnets and highly anisotropic antiferromagnets, is also successful in determining the symmetry of weakly anisotropic Heisenberg antiferromagnets with multiple spin domains. Possible microscopic origin of magnetic anisotropy is briefly discussed. © 2011 Elsevier Inc. All rights reserved. Source
Agency: Cordis | Branch: FP7 | Program: CSA-SA | Phase: FP7-PEOPLE-2013-NIGHT | Award Amount: 72.81K | Year: 2013
On Friday evening, September 27th, 2013, Researchers Night project is planned to be organized in the three largest cities in Republic of Croatia: Zagreb, Split and Rijeka. The main theme of the Researchers Night 2013 in Croatia is Science and Technology in Service of Life and Health. Acronym of the project is NLO which stands for Night-of-the-Lab-Out and the project aims at bringing researchers closer to the public and proving they are not some strange people closed in their labs, but ordinary people sharing different interests like everyone else. The primary objective of the project NLO is to provide wider public with an opportunity to meet young, outstanding researchers who actively perform research in fundamental and multidisciplinary fields involving knowledge and technologies in service of life and health. The main messages of the RN project will put emphasis on the importance of scientific research in everyday life and on exciting and interesting scientific life and career. The proposed concept of the RN project gives the opportunity to change stereotypes about the researchers and intends to stimulate public interest towards science and research as an attractive career. Project is organized by nine partners in three largest cities in Croatia: Agency for Mobility and EU Programmes, Society znanost.org, University of Split, University of Rijeka, The Faculty of Medicine and The Faculty of Engineering at the University of Rijeka, University of Zagreb, Ruer Bokovi Institute and Institute of Physics in Zagreb. Different contents during the Night will be adjusted to wider audience like various competitions, science act show, carnival parade, researchers on stilts, science cinema marathons, exhibitions, projections, stands and many other surprises.
Institute Za Fiziku | Date: 2012-02-23
A cryostat with a PTR cooling and a boiling fluid medium including a two stage sample holder thermalization, especially convenient for AC susceptibility measurement; wherein: a 1st PTR stage is connected to a recondenser with a thermal link only; the recondenser partially penetrates through the walls of a chamber into a dewar region above a boiling fluid level, wherein the recondenser includes an integrally built thermalization point with the internal thread; whereby a 2nd PTR stage thermally connected to the thermalization block by the use of a non-flexible thermal link, wherein said thermal block includes an another thermalization point. The thermalization block enables relative vertical movement of a sample holder with respect to the cryostat without loss of excellent thermal contact with the thermalization point. Outside the vacuum chamber there are magnetic coils immersed in the boiling fluid, thus achieving substantial reduction of the parasitic effects in measurements.
Tomic S.,Institute Za Fiziku |
Dressel M.,University of Stuttgart
Reports on Progress in Physics | Year: 2015
In conventional ferroelectrics the polarization is induced either by the relative displacement of positive and negative ions due to a lattice distortion or by the collective alignment of permanent electric dipoles. Strongly correlated materials with the inversion-symmetry-broken ground states feature electronic ferroelectricity, a phenomenon which has recently caught the attention of condensed matter physicists due to its great fundamental and technological importance. The discovery of electronic ferroelectricity in one and two-dimensional molecular solids is an exciting development because they show a rich variety of nonlinear properties and complex electrodynamics, including nontrivial emergent excitations. We summarize key experimental results, sketch the current theoretical understanding and outline promising prospects of this phenomenon which have great potential for future electronic devices. © 2015 IOP Publishing Ltd. Source
Agency: Cordis | Branch: FP7 | Program: CPCSA | Phase: INFRA-2012-2.3.1. | Award Amount: 26.57M | Year: 2012
PRACE-3IP supports the accelerated implementation of the pan-European HPC Research Infrastructure (RI) created in April 2010. It continues, complements, and extends the work of the PRACE-1IP and -2IP projects.\nPRACE-3IP addresses the computational and simulation needs of European scientific communities and of industry to keep them at the forefront of discovery. Our vision is the formation of an integrated HPC ecosystem of facilities and services enabling researchers to realise the full potential of computational science within the supportive environment of the ERA.\nThe project will undertake a joint pre-commercial procurement (PCP) pilot to obtain a solution for a Whole System Design for Energy Efficient HPC. This pilot is the first of its kind on a Europe-wide level and the lessons learned will be invaluable for PRACE in its future procurement strategy and for Europe as a whole in using PCP as a driver for innovation.\nPRACE-3IP will deliver a broad set of services suitable for use by industry and commerce. The PRACE RI will be open for use by SMEs and large European businesses, offering Tier-0 and Tier-1 access, training, and applications support.\nApplications support and enabling will have a bias towards addressing major socio-economic challenges. New tools will be made available under Open Source. Best practises will be identified, documented and made available to the European HPC community in academia and industry.\nPRACE-3IP will have a broad training and outreach activity designed to engage more user communities, including industry, in the use of HPC. The next generation of students and researchers will be introduced to the benefits of HPC and the technologies and knowledge required applying it successfully in their discipline.\nPRACE-3IP will considerably strengthen and deepen the co-operation between HPC centres, funding bodies and research communities in a mutually beneficial partnership to enhance European scientific and industrial competitiveness.