scholarly journals Long range magnetic ordering and magneto-(di) electric effect in a new class of high entropy spinel oxide

2020 ◽  
Vol 183 ◽  
pp. 107-110
Author(s):  
Sourav Marik ◽  
Deepak Singh ◽  
Bruno Gonano ◽  
Fabien Veillon ◽  
Denis Pelloquin ◽  
...  
Keyword(s):  
Long Range ◽  
Magnetic Ordering ◽  
Spinel Oxide ◽  
High Entropy ◽  
New Class ◽  
Electric Effect

scholarly journals Long Range Magnetic Ordering and Magneto-(Di) Electric Effect in a New Class of High Entropy Spinel Oxide

2019 ◽  
Author(s):  
Sourav Marik ◽  
Deepak Singh ◽  
Bruno Gonano ◽  
Fabien Veillon ◽  
Denis Pelloquin ◽  
...  
Keyword(s):  
Long Range ◽  
Magnetic Ordering ◽  
Spinel Oxide ◽  
High Entropy ◽  
New Class ◽  
Electric Effect

scholarly journals Long-range magnetic ordering in rocksalt-type high-entropy oxides

2019 ◽  
Vol 114 (12) ◽  
pp. 122401 ◽  
Author(s):  
Marco Polo Jimenez-Segura ◽  
Tomohiro Takayama ◽  
David Bérardan ◽  
Andreas Hoser ◽  
Manfred Reehuis ◽  
...  
Keyword(s):  
Long Range ◽  
Magnetic Ordering ◽  
High Entropy

Layered High-Entropy Oxide Structures for Reversible Energy Storage

2020 ◽  
Author(s):  
Junbo Wang ◽  
Yanyan Cui ◽  
Qingsong Wang ◽  
Kai Wang ◽  
Xiaohui Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cathode Material ◽  
Spray Pyrolysis ◽  
Lattice Structure ◽  
Oxide Materials ◽  
High Entropy ◽  
New Class ◽  
Nebulized Spray Pyrolysis

<p>Layered Li<i><sub>x</sub></i>MO<sub>2</sub> materials, a new class of high-entropy oxides, have been synthesized by nebulized spray pyrolysis. Specifically, the lattice structure of Li(Ni<sub>1/3</sub>Mn<sub>1/3</sub>Co<sub>1/3</sub>)O<sub>2</sub> (NCM111) cathode material has been replicated successfully while increasing the number of cations in equimolar proportions, thereby allowing transition to high-entropy oxide materials.</p>

Enhanced Magnetic Frustration in a New High Entropy Diamond Lattice Spinel Oxide

2020 ◽  
Author(s):  
Sourav Marik ◽  
Deepak Singh ◽  
Bruno Gonano ◽  
Fabien Veillon ◽  
Denis Pelloquin ◽  
...  
Keyword(s):  
Diamond Lattice ◽  
Magnetic Frustration ◽  
Spinel Oxide ◽  
High Entropy

scholarly journals Interdependent scaling of long-range oxygen and magnetic ordering in nonstoichiometric Nd2NiO4.10

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Sumit Ranjan Maity ◽  
Monica Ceretti ◽  
Lukas Keller ◽  
Jürg Schefer ◽  
Martin Meven ◽  
...  
Keyword(s):  
Long Range ◽  
Magnetic Ordering

scholarly journals A novel class of translationally invariant spin chains with long-range interactions

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
B. Basu-Mallick ◽  
F. Finkel ◽  
A. González-López
Keyword(s):  
Long Range ◽  
Degrees Of Freedom ◽  
Spin Chains ◽  
Open Chain ◽  
New Class ◽  
Spin Interactions ◽  
Long Range Interactions ◽  
Spin Reversal ◽  
Twisted Yangian ◽  
Internal Degrees Of Freedom

Abstract We introduce a new class of open, translationally invariant spin chains with long-range interactions depending on both spin permutation and (polarized) spin reversal operators, which includes the Haldane-Shastry chain as a particular degenerate case. The new class is characterized by the fact that the Hamiltonian is invariant under “twisted” translations, combining an ordinary translation with a spin flip at one end of the chain. It includes a remarkable model with elliptic spin-spin interactions, smoothly interpolating between the XXX Heisenberg model with anti-periodic boundary conditions and a new open chain with sites uniformly spaced on a half-circle and interactions inversely proportional to the square of the distance between the spins. We are able to compute in closed form the partition function of the latter chain, thereby obtaining a complete description of its spectrum in terms of a pair of independent su(1|1) and su(m/2) motifs when the number m of internal degrees of freedom is even. This implies that the even m model is invariant under the direct sum of the Yangians Y (gl(1|1)) and Y (gl(0|m/2)). We also analyze several statistical properties of the new chain’s spectrum. In particular, we show that it is highly degenerate, which strongly suggests the existence of an underlying (twisted) Yangian symmetry also for odd m.

Fabrication and magnetic property of novel (Co,Zn,Fe,Mn,Ni)3O4 high-entropy spinel oxide

2021 ◽  
pp. 168123
Author(s):  
Saifei Dai ◽  
Mingya Li ◽  
Xiaoqiang Wang ◽  
Haiyang Zhu ◽  
Yihan Zhao ◽  
...  
Keyword(s):  
Magnetic Property ◽  
Spinel Oxide ◽  
High Entropy

scholarly journals Emergent long-range magnetic order in ultrathin (111)-oriented LaNiO3 films

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Margaret M. Kane ◽  
Arturas Vailionis ◽  
Lauren J. Riddiford ◽  
Apurva Mehta ◽  
Alpha T. N’Diaye ◽  
...  
Keyword(s):  
Long Range ◽  
Degrees Of Freedom ◽  
Magnetic Order ◽  
Magnetic Ordering ◽  
Anomalous Hall Effect ◽  
X Ray Diffraction ◽  
X Ray ◽  
Range Magnetic Order ◽  
Film Substrate ◽  
Long Range Magnetic Order

AbstractThe emergence of ferromagnetism in materials where the bulk phase does not show any magnetic order demonstrates that atomically precise films can stabilize distinct ground states and expands the phase space for the discovery of materials. Here, the emergence of long-range magnetic order is reported in ultrathin (111) LaNiO3 (LNO) films, where bulk LNO is paramagnetic, and the origins of this phase are explained. Transport and structural studies of LNO(111) films indicate that NiO6 octahedral distortions stabilize a magnetic insulating phase at the film/substrate interface and result in a thickness-dependent metal–insulator transition at t = 8 unit cells. Away from this interface, distortions relax and bulk-like conduction is regained. Synchrotron x-ray diffraction and dynamical x-ray diffraction simulations confirm a corresponding out-of-plane unit-cell expansion at the interface of all films. X-ray absorption spectroscopy reveals that distortion stabilizes an increased concentration of Ni2+ ions. Evidence of long-range magnetic order is found in anomalous Hall effect and magnetoresistance measurements, likely due to ferromagnetic superexchange interactions among Ni2+–Ni3+ ions. Together, these results indicate that long-range magnetic ordering and metallicity in LNO(111) films emerges from a balance among the spin, charge, lattice, and orbital degrees of freedom.

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