All Outputs (10)

Lead-free (Ba,Sr)TiO3 – BiFeO3 based multilayer ceramic capacitors with high energy density (2019)
Journal Article
Wang, G., Lu, Z., Li, J., Ji, H., Yang, H., Li, L., …Reaney, I. M. (2020). Lead-free (Ba,Sr)TiO3 – BiFeO3 based multilayer ceramic capacitors with high energy density. Journal of the European Ceramic Society, 40(4), 1779-1783. https://doi.org/10.1016/

High recoverable energy density (10 J cm−3) multilayers have been fabricated from lead-free 0.61BiFeO3-0.33(Ba0.8Sr0.2)TiO3-0.06La(Mg2/3Nb1/3)O3 ceramics. High breakdown strength > 730 kV cm-1 was achieved through the optimisation of multilayer proce... Read More about Lead-free (Ba,Sr)TiO3 – BiFeO3 based multilayer ceramic capacitors with high energy density.

Spin-wave directional anisotropies in antiferromagnetic Ba3NbFe3Si2O14 (2019)
Journal Article
Stock, C., Johnson, R. D., Giles-Donovan, N., Songvilay, M., Rodriguez-Rivera, J. A., Lee, N., …Cheong, S. (2019). Spin-wave directional anisotropies in antiferromagnetic Ba3NbFe3Si2O14. Physical Review B, 100(13), https://doi.org/10.1103/physrevb.100.1

Ba3NbFe3Si2O14 (langasite) is structurally and magnetically single-domain chiral with the magnetic helicity induced through competing symmetric exchange interactions. Using neutron scattering, we show that the spin waves in antiferromagnetic langasit... Read More about Spin-wave directional anisotropies in antiferromagnetic Ba3NbFe3Si2O14.

Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1−xCox)2As2 (2019)
Journal Article
Tian, L., Liu, P., Xu, Z., Li, Y., Lu, Z., Walker, H. C., …Dai, P. (2019). Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1−xCox)2As2. Physical Review B, 100(13), https://doi.org/1

We use inelastic neutron scattering to study spin excitation anisotropy in mechanically detwinned Ba(Fe1−xCox)2As2 with x=0.048 and 0.054. Both samples exhibit a tetragonal-to-orthorhombic structural transition at Ts, a collinear static antiferromagn... Read More about Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1−xCox)2As2.

Frequency and temperature independent (Nb0.5Ga0.5)x(Ti0.9Zr0.1)1-xO2 ceramics with giant dielectric permittivity and low loss (2019)
Journal Article
Xia, W., Liu, Y., Wang, G., Li, J., Cao, C., Hu, Q., …Wang, D. (2020). Frequency and temperature independent (Nb0.5Ga0.5)x(Ti0.9Zr0.1)1-xO2 ceramics with giant dielectric permittivity and low loss. Ceramics International, 46(3), 2954-2959. https://doi.o

Nb5+ and Ga3+ co-doped Ti0.9Zr0.1O2 ceramics were synthesized using the conventional solid-state reaction method. Single rutile-liked phase of octahedron structure were identified for all compositions in (Nb0.5Ga0.5)x(Ti0.9Zr0.1)1-xO2 (NGT) with x = ... Read More about Frequency and temperature independent (Nb0.5Ga0.5)x(Ti0.9Zr0.1)1-xO2 ceramics with giant dielectric permittivity and low loss.

Origin of the large electrostrain in BiFeO3-BaTiO3 based lead-free ceramics (2019)
Journal Article
Wang, G., Fan, Z., Murakami, S., Lu, Z., Hall, D. A., Sinclair, D. C., …Reaney, I. M. (2019). Origin of the large electrostrain in BiFeO3-BaTiO3 based lead-free ceramics. Journal of Materials Chemistry A, 7(37), 21254-21263. https://doi.org/10.1039/c9ta

High electrostrain and breakdown strength (1 − x)BiFeO3-0.3BaTiO3-xNd(Li0.5Nb0.5)O3 (BF-BT-xNLN) ceramics were studied by in situ synchrotron X-ray diffraction (XRD) in combination with Rietveld refinement and conventional transmission electron micro... Read More about Origin of the large electrostrain in BiFeO3-BaTiO3 based lead-free ceramics.

Finite field regime for a quantum spin liquid in α−RuCl3 (2019)
Journal Article
Balz, C., Lampen-Kelley, P., Banerjee, A., Yan, J., Lu, Z., Hu, X., …Nagler, S. E. (2019). Finite field regime for a quantum spin liquid in α−RuCl3. Physical Review B, 100(6), https://doi.org/10.1103/physrevb.100.060405

An external magnetic field can induce a transition in α−RuCl3 from an ordered zigzag state to a disordered state that is possibly related to the Kitaev quantum spin liquid. Here, we present field-dependent inelastic neutron scattering and magnetocalo... Read More about Finite field regime for a quantum spin liquid in α−RuCl3.

Electric field‐induced irreversible relaxor to ferroelectric phase transformations in Na0.5Bi0.5TiO3-NaNbO3 ceramics (2019)
Journal Article
Wang, G., Lu, Z., Zhang, Z., Feteira, A., Tang, C. C., & Hall, D. A. (2019). Electric field‐induced irreversible relaxor to ferroelectric phase transformations in Na0.5Bi0.5TiO3-NaNbO3 ceramics. Journal of the American Ceramic Society, 102(12), 7746-775

(1-x)Na0.5Bi0.5TiO3-xNaNbO3 (x = 0.02, 0.04, 0.06, and 0.08) ceramics were fabricated by solid-state reaction. High-resolution synchrotron x-ray powder diffraction (SXPD) data, coupled with macroscopic electromechanical measurements, reveal the occur... Read More about Electric field‐induced irreversible relaxor to ferroelectric phase transformations in Na0.5Bi0.5TiO3-NaNbO3 ceramics.

Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 under magnetic field (2019)
Journal Article
Portnichenko, P. Y., Nikitin, S. E., Prokofiev, A., Paschen, S., Mignot, J., Ollivier, J., …Inosov, D. S. (2019). Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 under magnetic field. Physical Review B, 99(21), https://d

Hidden-order phases that occur in a number of correlated f-electron systems are among the most elusive states of electronic matter. Their investigations are hindered by the insensitivity of standard physical probes, such as neutron diffraction, to th... Read More about Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 under magnetic field.

Ba8MnNb6O24: A model two-dimensional spin-5/2 triangular lattice antiferromagnet (2019)
Journal Article
Rawl, R., Ge, L., Lu, Z., Evenson, Z., Dela Cruz, C. R., Huang, Q., …Ma, J. (2019). Ba8MnNb6O24: A model two-dimensional spin-5/2 triangular lattice antiferromagnet. Physical Review Materials, 3(5), https://doi.org/10.1103/physrevmaterials.3.054412

We successfully synthesized and characterized the triangular lattice antiferromagnet Ba8MnNb6O24, which comprises equilateral spin-5/2Mn2+ triangular layers separated by six nonmagnetic Nb5+ layers. The detailed susceptibility, specific heat, elastic... Read More about Ba8MnNb6O24: A model two-dimensional spin-5/2 triangular lattice antiferromagnet.

Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe0.97Cr0.03)2(As1−xPx)2 (2019)
Journal Article
Zhang, W., Wei, Y., Xie, T., Liu, Z., Gong, D., Ma, X., …Li, S. (2019). Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe0.97Cr0.03)2(As1−xPx)2. Physical review letters, 122(3), https://doi.org/10.1103/physrevlett.122.037001

We have systematically studied physical properties of Ba(Fe0.97Cr0.03)2(As1−xPx)2, where superconductivity in BaFe2(As1−xPx)2 is fully suppressed by just 3% of Cr substitution of Fe. A quantum critical point is revealed at x∼0.42, where non-Fermi-liq... Read More about Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe0.97Cr0.03)2(As1−xPx)2.