{"title":"Damping analysis of a permanent magnet eddy current damper with CuFe alloy stator inner cylinder under impact load","authors":"Sendi Pu , Liqun Wang , Hao Guo , Guolai Yang","doi":"10.1016/j.jmmm.2025.173115","DOIUrl":"10.1016/j.jmmm.2025.173115","url":null,"abstract":"<div><div>The cylindrical permanent magnet linear eddy current damper consists of two parts: the stator and the mover. The mover is composed of a magnetic group and a motion rod, while the stator is a composite cylinder made of an inner conductor cylinder and an outer magnetic cylinder. To explore the damping characteristics of a copper-iron alloy with both high conductivity and high magnetic permeability when applied to the inner cylinder of the damper stator in intensive impact environment, a dynamic model of the eddy current damper was established. Through finite element analysis, the magnetic field distribution and damping characteristics under impact loads were obtained for inner cylinders made of different compositions of copper-iron alloy. The effects of different electrical conductivities, magnetization characteristics, inner cylinder thickness, and outer cylinder thickness on the magnetic field distribution and damping characteristics were further studied. The research results show that the application of this copper-iron alloy in the stator inner cylinder of the eddy current damper can effectively improve the damping characteristics.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173115"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Formation, magnetic properties and electronic structure of CoFeGa2: An XYZ2 type Heusler alloy analogue","authors":"Haoze Li, Xiangxiang Jiang, Wei Guo, Kaining Lin, Heyan Liu, Hongzhi Luo","doi":"10.1016/j.jmmm.2025.173116","DOIUrl":"10.1016/j.jmmm.2025.173116","url":null,"abstract":"<div><div>A new Mn-free XYZ<sub>2</sub> type Heusler-like alloy CoFeGa<sub>2</sub> was synthesized, both X-ray diffraction and scanning electron microscope measurements suggest it is a fine single phase. CoFeGa<sub>2</sub> basically crystallizes in B2 structure with Ga occupying A, C sites and Co, Fe randomly occupying B, D sites. Simultaneously, a small amount of Fe/Co-Ga antisite disorder can also exist. CoFeGa<sub>2</sub> has a Curie temperature of 62 K and a saturation magnetization of 0.81 μ<sub>B</sub>/f.u. at 5 K. The bifurcation between the zero-field-cooling and field-cooling thermomagnetic curve indicates the co-existence of ferromagnetic and antiferromagnetic state at low temperatures. First-principles calculations were performed to discuss the properties of CoFeGa<sub>2</sub>. The preferable occupation of Ga for A, C sites is related to the strong p-d covalent hybridization between Ga and Co/Fe atoms, as can be determined from the electronic structure and phonon spectrum calculations. However, the highly-ordered L2<sub>1</sub> structure with the lowest total energy is nonmagnetic. Comparing with L2<sub>1</sub>, the B2 disorder structure is only 0.02 eV higher in energy, and importantly, has a non-zero total moment of 0.36 μ<sub>B</sub>/f.u. Fe/Co-Ga antisite disorder can increase the total moment of CoFeGa<sub>2</sub> more rapidly. The small amount of Fe/Co-Ga disorder in the sample can also contribute to the saturation magnetization. All this indicates a disorder induced ferromagnetic character in CoFeGa<sub>2</sub>.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173116"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Baiboud , A. Labrag , M. Khenfouch , M. Bghour , A. Tirbiyine , J. El Qars , H. Charkaoui , A. Chouchna , K. Elgoumiri
{"title":"First-principles investigations of magnetic properties and Curie temperature in V-doped CdX (X = S, Se, and Te) compounds","authors":"M. Baiboud , A. Labrag , M. Khenfouch , M. Bghour , A. Tirbiyine , J. El Qars , H. Charkaoui , A. Chouchna , K. Elgoumiri","doi":"10.1016/j.jmmm.2025.173112","DOIUrl":"10.1016/j.jmmm.2025.173112","url":null,"abstract":"<div><div>The electronic structure and magnetic properties in zinc blende structure of Cd<sub>1−x</sub>V<sub>x</sub>X (X = S, Se, Te) with <em>x</em> = 12.5 % diluted magnetic semiconductors (DMSs) have been investigated using the Generalized Gradient Approximation (GGA). The investigations were carried out employing the full potential-linearized augmented plane wave method (FP-LAPW) within Density Functional Theory (DFT), as implemented in the CASTEP code.</div><div>The hybridization between the p states of sulfur (S), selenium (Se), or tellurium (Te), and the 3d states of vanadium (V)., as revealed by the density of states, confirms the formation of antibonding states within the gap, which in turn stabilizes the ferromagnetic ground state associated with the double-exchange mechanism, the electronic structures exhibit half-metallic behavior for CdVTe and CdVS, while CdVSe shows semiconductor behavior for both spin channels at the same concentration (<em>x</em> = 12.5 %).</div><div>Furthermore, the total magnetic moment of Cd<sub>1−x</sub>V<sub>x</sub>X (X = S, Se, Te) compounds is primarily due to the V site, with very low contributions from Cd and the chalcogens (S, Se, Te). These compounds are robust ferromagnets with diverse band gap characteristics in their electronic structures, exhibiting 100 % spin polarization. This makes them suitable for potential applications in spintronics and in optoelectronic devices. Our findings provide a new opportunity for experimentalists to verify these predictions and explore the use of these materials in practical applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173112"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Non-Magnetic doping effects on magnetic properties of High-Temperature multiferroic compounds YBaCu1-xZnxFeO5 and YBaCuFe1-yGayFeO5","authors":"Yukio Yasui, Kota Ikeda, Ryusei Mimura","doi":"10.1016/j.jmmm.2025.173114","DOIUrl":"10.1016/j.jmmm.2025.173114","url":null,"abstract":"<div><div>This study examines the effects of non-magnetic impurities at different magnetic sites on the magnetic properties of the ordered oxygen-deficient perovskite YBaCuFeO<sub>5</sub>, which exhibits multiferroic behavior above room temperature. Magnetic susceptibility measurements were performed on polycrystalline samples of YBaCuFe<sub>1-y</sub>Ga<sub>y</sub>O<sub>5</sub> with Ga<sup>3+</sup> (spin <em>S</em> = 0) doping at Fe<sup>3+</sup> (<em>S</em> = 5/2) sites and YBaCu<sub>1-x</sub>Zn<sub>x</sub>FeO<sub>5</sub> with Zn<sup>2+</sup> (<em>S</em> = 0) doping at Cu<sup>2+</sup> (<em>S</em> = 1/2) sites. Magnetic susceptibility (χ)–temperature (<em>T</em>) curves for both doped systems below 50 K did not demonstrate Curie-like behavior indicative of a paramagnetic component, suggesting that free-end spins were not induced by long-range interactions in the systems. From the peak temperatures of the χ–<em>T</em> curves, the doping concentration dependence of the magnetic transition temperatures <em>T</em><sub>N1</sub> and <em>T</em><sub>N2</sub> was determined. For YBaCuFe<sub>1-y</sub>Ga<sub>y</sub>O<sub>5</sub>, both <em>T</em><sub>N1</sub> and <em>T</em><sub>N2</sub> decrease linearly with increasing <em>y</em>. In contrast, for YBaCu<sub>1-x</sub>Zn<sub>x</sub>FeO<sub>5</sub>, <em>T</em><sub>N1</sub> decreases while <em>T</em><sub>N2</sub> increases with increasing <em>x</em> , with <em>T</em><sub>N2</sub> reaching a maximum value at 349 K at <em>x</em> = 0.09. Although the atomic arrangement of Cu<sup>2+</sup> and Fe<sup>3+</sup> ions is randomly distributed within (Cu, Fe)O<sub>5</sub> oxygen pyramids, these results indicate that Cu<sup>2+</sup> and Fe<sup>3+</sup> ions play distinct roles in determining the magnetic properties. Based on these experimental findings, a discussion is provided on the physics of non-magnetic impurity effects to different magnetic ions for the high-temperature multiferroic compound YBaCuFeO<sub>5</sub>.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173114"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Anisotropy of waveguide modes of exchange spin waves in in-plane magnetized yig films","authors":"V.V. Tikhonov, A.S. Ptashenko, A.V. Sadovnikov","doi":"10.1016/j.jmmm.2025.173117","DOIUrl":"10.1016/j.jmmm.2025.173117","url":null,"abstract":"<div><div>It has been demonstrated that energy transfer in epitaxial YIG films is carried out via waveguide modes of exchange spin waves (ESWs), which serve as carriers of exchange power in the precessional wave of spin moments linked by inhomogeneous exchange interaction. A methodology for calculating the dispersion and energy characteristics of ESW modes is proposed. It has been established that ESW modes in in-plane magnetized YIG films exhibit pronounced anisotropic properties. The anisotropy of ESW modes is shown to be caused by the presence of linear and elliptical polarization in the precession wave. The superposition of these two types of polarization distorts the trajectory of spin moment precession and induces a rotation of the symmetry axes of the elliptical trajectory. The proposed calculation methodology aligns well with experimental data and significantly enhances the theory of magnetostatic waves</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173117"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structural, magnetic, and cryogenic magnetocaloric properties of Gd11O10(SiO4)(PO4)3 phosphosilicate","authors":"Wang Chen, Junli Lin, Xin Wang, Lingwei Li","doi":"10.1016/j.jmmm.2025.173107","DOIUrl":"10.1016/j.jmmm.2025.173107","url":null,"abstract":"<div><div>In this work, we synthesized the Gd<sub>11</sub>O<sub>10</sub>(SiO<sub>4</sub>)(PO<sub>4</sub>)<sub>3</sub> phosphosilicate through high-temperature solid-phase reaction and systematically studied its structure, magnetic properties, and cryogenic magnetocaloric performances. The Gd<sub>11</sub>O<sub>10</sub>(SiO<sub>4</sub>)(PO<sub>4</sub>)<sub>3</sub> is found to crystalize in a triclinic structure (space group <em>P</em>1) and its consistent elements are all distributed uniformly and present as Gd<sup>3+</sup>, Si<sup>4+</sup>, P<sup>5+</sup>, and O<sup>2–</sup> valence states, respectively. Moreover, prominent magnetocaloric performances were observed around its magnetic ordering temperature of 3.1 K. Under 0-7T magnetic field variation, the maximum magnetic entropy change/temperature-averaged magnetic entropy change (5 K-lift) and relative cooling power/refrigerant capacity of Gd<sub>11</sub>O<sub>10</sub>(SiO<sub>4</sub>)(PO<sub>4</sub>)<sub>3</sub> oxide are 33.76/31.42 J/kgK and 389.98/295.15 J/kg, respectively, which are comparable to most acquired <em>RE</em>-based remarkable magnetocaloric materials, making present Gd<sub>11</sub>O<sub>10</sub>(SiO<sub>4</sub>)(PO<sub>4</sub>)<sub>3</sub> phosphosilicate may considerable for cryogenic magnetic refrigeration application.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173107"},"PeriodicalIF":2.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Disorder-driven critical behavior of complex susceptibility in an amorphous ferromagnet","authors":"Songül Özüm , Gül Gülpınar , Elif Sünnetci , Rıza Erdem","doi":"10.1016/j.jmmm.2025.173080","DOIUrl":"10.1016/j.jmmm.2025.173080","url":null,"abstract":"<div><div>The disorder-driven critical, multicritical, and phase coexistence characteristics of the complex magnetic susceptibility for the Blume-Capel model with a uniaxial anisotropy term that fluctuates in magnitude are analyzed within the framework of the linear response theory. The generalized flux conjugate to its generalized force is formulated as the time derivative of the magnetization. The stationary solution of the kinetic equation in a sinusoidal external magnetic field yields the magnetic dispersion and absorption factors <span><math><mrow><msub><mi>χ</mi><mn>1</mn></msub><mrow><mo>(</mo><mi>ω</mi><mo>)</mo></mrow></mrow></math></span>, <span><math><mrow><msub><mi>χ</mi><mn>2</mn></msub><mrow><mo>(</mo><mi>ω</mi><mo>)</mo></mrow></mrow></math></span>. The thermal behavior of ac susceptibility is examined thoroughly, focusing on the temperature dependencies of magnetic dispersion and absorption factors near first, second-order, and tricritical points. Crystal field variances of <span><math><mrow><msub><mi>χ</mi><mn>1</mn></msub><mrow><mo>(</mo><mi>ω</mi><mo>)</mo></mrow></mrow></math></span> and <span><math><mrow><msub><mi>χ</mi><mn>2</mn></msub><mrow><mo>(</mo><mi>ω</mi><mo>)</mo></mrow></mrow></math></span> are shown in the neighborhood of two successive first-order transitions between ordered and disordered critical points, where phase transitions occur between ordered and partly ordered phases.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173080"},"PeriodicalIF":2.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bulk single crystal growth and magneto-transport properties of α-MnTe","authors":"Si Wu , Yanping Huang , Hao Song , Baomin Wang","doi":"10.1016/j.jmmm.2025.173106","DOIUrl":"10.1016/j.jmmm.2025.173106","url":null,"abstract":"<div><div>The collinear antiferromagnetic <em>α</em>-MnTe has recently attracted widespread attention as an altermagnet. Here, we reported the hexagonal and centimeter sized single crystals of <em>α</em>-MnTe are grown using the Sb-flux technique and a thorough characterization of their composition, structural, magnetic, and electric properties. The growth conditions were optimized by investigating the phase diagram of <em>α</em>-MnTe. The quality and compositional homogeneity of the crystals were examined through x-ray Laue diffraction and energy dispersive spectrometer. Room temperature x-ray powder diffraction and a structure refinement confirmed a single phase NiAs-type hexagonal structure with <em>P</em>6<sub>3</sub>/<em>mmc</em> space group. Magnetization measurements on a single crystal reveal the transition temperature of the antiferromagnetic correlations is around 310 K. We experimentally revealed that when magnetic field perpendicular to the in-plane direction can induce weak ferromagnetic behavior. Additionally, we investigated the electrical properties of <em>α</em>-MnTe under ambient and high pressures. At ambient pressure, the upturn in the resistance curve at low temperature can be attributed to electron weak localization behavior caused by quantum interference effects. Under high pressure, <em>α</em>-MnTe undergoes a structural phase transition to <em>γ</em>-MnTe. The first-principles calculation indicates that the weakening of <em>p</em>–<em>d</em> hybridization under pressure enhances the activity of localized <em>d</em>-electrons near the Fermi level in the conduction band. As pressure increases, the metallicity of MnTe is strengthened. Our research findings lay the foundation for further studies on <em>α</em>-MnTe as a promising candidate for altermagnetic applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173106"},"PeriodicalIF":2.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Vorticity-induced magnetization of paramagnetic fluids in Taylor–Couette flow","authors":"Peter Filip , Miloš Revallo , Lucia Fojtíková","doi":"10.1016/j.jmmm.2025.173062","DOIUrl":"10.1016/j.jmmm.2025.173062","url":null,"abstract":"<div><div>We investigate the effect of differential rotation of a paramagnetic fluid on its magnetization state in a cylindrical geometry. Assuming a differentially rotating fluid in the classical Taylor–Couette problem, the magnitude of the vorticity can be controlled by changing the geometry parameters of a cylindrical vessel and/or the rotation rates of its walls. There are two special cases of the flow, a regime with zero vorticity within the rotating fluid and another one with vanishing total angular momentum of the fluid. We point out that vorticity can be the quantity responsible for the self-magnetization of rotating paramagnetic fluids. By analogy with the Barnett effect, we derive an expression for the dipole magnetic field generated by a differentially rotating fluid via the vorticity-mediated mechanism. We propose experimental verification of the mechanism, based on the measurement of generated magnetic fields. The requirement of a stable laminar Taylor–Couette flow with azimuthal symmetry determines the choice of admissible cylindrical model parameters. The case of transient time-dependent flow exhibiting local increase of the vorticity close to cylindrical boundaries is discussed. We also present a quantitative estimate of the vorticity within differentially rotating layers inside the Sun and the Earth. Such considerations may allow to assess the role of the vorticity-induced mechanism in the magnetic field generation (initiation) inside celestial bodies.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173062"},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electronic, optical and magnetic properties of TM-doped CdTe nanosheet: First-principles calculations","authors":"N.A. Ismayilova , Z.A. Jahangirli","doi":"10.1016/j.jmmm.2025.173079","DOIUrl":"10.1016/j.jmmm.2025.173079","url":null,"abstract":"<div><div>The electronic, magnetic, and optical properties of two-dimensional (2D) CdTe nanosheets (N.S.) with substitutional doping of transition metal atoms (Cr, Mn, Fe, Co, V, Cu) were investigated using density functional theory (DFT). To determine the stable magnetic phases, the total energies of doped nanosheets were optimized for various ferromagnetic and antiferromagnetic configurations. The findings reveal that, while the pristine nanosheet exhibits a non-magnetic, wide-bandgap (3.28 eV) semiconductor behavior, doping with transition metal atoms induces magnetic moments, leading to structural reconstruction around the dopant and its neighboring atoms. The Cr- and Co-doped CdTe nanosheets, exhibiting 100 % spin polarization, are promising candidates for spintronic devices due to their strong half-metallic ferromagnetic properties. The optical spectra of both pure and transition metal-doped CdTe nanosheets were calculated along the z-axis as a function of wavelength (λ). The computed optical properties include the complex dielectric function and absorption as a function of wavelength. These interesting results suggest that TM-doped CdTe nanosheets hold potential for applications in nanodevices and spintronic devices based on low-dimensional nanostructures.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173079"},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}