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JE GEUN PARK (Seoul National University (SNU))MagnetismPlenary
The discovery of magnetism in atomically thin materials has opened an entirely new chapter in the study of low-dimensional quantum matter. Since the first reports of antiferromagnetic van der Waals magnets in 2016, followed by the discovery of ferromagnetic counterparts in 2017, the field has evolved into one of the most vibrant areas of condensed matter physics. In this talk, I will give a...
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Shinichiro Yano (NSRRC)MagnetismContributed Oral
The perovskite ABO₃ is a significant class of materials with properties, such as superconductivity, ferroelectricity, charge ordering, colossal magnetoresistance [1]. By substituting the crystallographic A- or B-site, the material can be tuned to increase potential for applications. Our focus is so-called orthochromites RCrO3 (R = rare earth, Sc, and Y). The RCrO3 has received much interest as...
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Mr Kyle Portwin (Institute for Superconducting and Electronic Materials, Faculty of Engineering and Information Science, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW 2500, Australia)MagnetismContributed Oral
Magnetite (Fe$_3$O$_4$) nanoparticles exhibit pronounced size-dependent magnetic and thermal properties relevant to spintronics, thermoelectrics, biomedical heating, and catalytic applications. In bulk Fe$_3$O$_4$, magnons and phonons govern key behaviours such as the Verwey transition, spin-lattice coupling, and thermal transport. However, at the nanoscale, their behaviour remains poorly...
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Prof. Clemens Ulrich (University of New South Wales)MagnetismContributed Oral
Bismuth ferrite (BiFeO3) is one of the rare materials which exhibits multiferroic properties already at room temperature. Therefore, it offers tremendous potential for future technological applications, such as in low-energy, high-density data storage or logic devices in IT. BiFeO3 possesses a G-type antiferromagnetic structure, where the Fe3+ spins form an incommensurate spin cycloid....
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Prof. Rie Umetsu (Tohoku University)MagnetismInvited Oral
Since half-metallic electronic structures were theoretically predicted in some half-Heusler and full-Heusler alloys, the half-metallic ferromagnets have been intensively investigated in a field of spintronics. Soft X-ray resonant inelastic X-ray scattering (RIXS) and the magnetic circular dichroism (MCD) were performed in order to detect the half-metallic electronic states in Heusler alloys....
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Jian-Rui Soh (A*STAR)MagnetismInvited Oral
The fundamental interaction between the neutron dipolar field and the magnetization density surrounding the scattering ion, lies at the heart of magnetic neutron diffraction. However, if the ion resides in an environment which breaks both time and spatial inversion symmetry, the current formalism for magnetic diffraction does not fully account for all the possible scattering mechanisms arising...
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Rina Takagi (The University of Tokyo)MagnetismInvited Oral
Antiferromagnets have long been regarded as magnetically compensated systems that lack the spontaneous electromagnetic responses characteristic of ferromagnets. However, recent advances in both experiment and theory have revealed that antiferromagnetic order can host a rich variety of electromagnetic phenomena when combined with symmetry breaking and complex spin textures. In this talk, we...
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Kyrylo Rabtsevych (Monash University)MagnetismPoster
Magnetic hopfions are three-dimensional topological spin textures characterised by non-local invariants and a rich internal structure, making them promising candidates for novel spintronic and transport phenomena. Weyl semimetals provide a natural electronic platform to probe such textures, as their low-energy quasiparticles behave as relativistic chiral fermions that are highly sensitive to...
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Yu-Hui Liang (Department of Physics, Tamkang Univeristy)MagnetismInvited Oral
Investigating the phase transitions of magnetic materials offers valuable insights into their fundamental physical mechanisms, thereby broadening the scope of their potential applications. While neutron scattering techniques are commonly employed by researchers for such studies, resonant elastic scattering using synchrotron radiation also proves highly effective in this field. The...
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Dr Oliver Bellwood (Okinawa Institute of Science and Technology Graduate University)MagnetismContributed Oral
The area law of entanglement entropy is known to heavily constrain the accessible system sizes in tensor network method simulations of 2D quantum magnetism. The situation is further complicated by the presence of geometrical frustration, which enhances quantum fluctuations and ground state degeneracy, leading to increased computational difficulty. We recently demonstrated that the Density...
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Ms Alice O'Keefe (University of Wollongong)MagnetismPoster
Lanthanum–barium manganite (La(1-x)Ba(x)MnO3, LBMO) nanocrystals were synthesised with barium substitution levels spanning x = 0.1–0.5 in order to systematically probe the influence of compositional doping and calcination temperature on magnetic behaviour relevant to nano-magnetic hyperthermia applications. Samples were prepared via glycine nitrate solution combustion synthesis process and...
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Abdul Basit (University of Melbourne)MagnetismPoster
The search for a quantum spin liquid (QSL) has stimulated substantial research activity within condensed matter physics, particularly following Kitaev’s proposal of his paradigmatic exactly solvable spin model. This model hosts a true QSL ground state and provides an elegant framework for fractionalisation, in which the original spin degrees of freedom decompose into emergent quasiparticles...
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Chris Ling (The University of Sydney)MagnetismContributed Oral
At very low temperatures, theoretically down to 0 K, the unpaired electronic spins on magnetic ions arranged in “frustrated” topologies such as triangles have difficulty finding long-range ordered ground states. This ideally leads to a Kitaev quantum spin-liquid (QSL) state in which the spins continue to fluctuate so the compound has finite entropy at absolute zero. QSL compounds have been...
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Karen Livesey (University of Colorado - Colorado Springs & University of Wollongong)MagnetismInvited Oral
The interfacial Dzyaloshinskii-Moriya Interaction (iDMI) occurs at the surface between a ferromagnet and a heavy metal. In the past 15 years, it has led to interesting magnetic phenomena such as room temperature skyrmions and asymmetric domain wall motion. [1] Spin wave propagation is nonreciprocal when there is iDMI. That is, spin waves of the SAME frequency have different wavelengths when...
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Evan Constable (ANSTO - Australian Synchrotron)MagnetismPoster
The rare-earth pyrochlore Tb₂Ti₂O₇ (TTO) remains one of the most puzzling frustrated magnetic systems. Although its crystal-electric-field (CEF) scheme and exchange topology nominally favour a classical dipolar spin-ice state, neither spin-ice order nor any long-range magnetism emerges down to tens of millikelvin. Increasing evidence points to the decisive role of magneto-elastic interactions,...
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Simon Granville (Victoria University of Wellington)MagnetismInvited Oral
Combining the rare earth (lanthanide) elements with nitrogen results in the rare-earth nitrides, semiconducting materials with strong magnetic moments that order cooperatively at cryogenic temperatures. The resulting materials have both highly-tuneable magnetism and conductivity that can be controlled over orders of magnitude – a near-unique combination with multiple applications for...
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Branwen Hastings (Univeristy of Auckland)MagnetismContributed Oral
Magnetic skyrmions are topologically protected spin structures that can be manipulated by various external stimuli with minimal energy input, making them attractive for future spintronic applications [1]. Skyrmion hosting materials have been proposed as solutions for many current global issues, especially around energy consumption and usage, with the potential for skyrmion hosts to provide...
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Prof. Hai-Feng Li (University of Macau)MagnetismInvited Oral
This research delves into the triclinic symmetry and ferroelectric nature of YCrO3, a chromium-based perovskite, using single-crystal neutron diffraction. We uncover a unique structural configuration that accounts for its ferroelectric properties, alongside a G-type antiferromagnetic arrangement. The study provides a comprehensive analysis of the interplay between lattice and spin degrees of...
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Ulrich Zuelicke (Victoria University of Wellington)MagnetismInvited Oral
Quantum materials exhibit a plethora of novel electric and magnetic orders beyond the textbook examples of ferroelectrics and ferromagnets. These include multiferroics [1], altermagnets [2], and novel forms of chirality [3]. The richness of materials and phenomena is reminiscent of mid-last-century particle physics, when a confounding zoo of "elementary" particles was only systematically...
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Cooper Finnigan (Monash University)MagnetismContributed Oral
Polar transition metal dichalgenides (TMDs) host electronic states with strong Rashba spin orbit interactions, yielding two spin-split Fermi surfaces with opposite spin chirality. Electrons of each chirality have an electron spin constrained perpendicularly to the electron momentum, and as a result the collective plasmon excitations of polar TMDs present themselves as coupled charge- and spin...
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Yusuke NambuMagnetismPlenary
Unconventional magnetism often emerges when the chiral degree of freedom of spins becomes decisive beyond simple collinear order. In this talk, I will show how polarised neutrons directly access the chiral term, enabling sign‑resolved determination of spin chirality in both static magnetic structures and reversibly switched states under external perturbations. Next, I will visualise the...
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Juliana Avtarovski (University of Wollongong)MagnetismContributed Oral
The natural mineral clinoatacamite, $[Cu_2Cl(OH)_3]$ , exhibits low-temperature, frustrated magnetic behaviour where competing interactions are responsible for novel magnetic properties. Attempts to establish the magnetic phases in this material have been undertaken and an unconventional applied field (H||b) phase diagram has been revealed. Two critical transition temperatures at zero field...
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