Magnetic properties of nanocomposite and bulk rare earth titanates Ho2Ti2O7 and Yb2Ti2O7

Nemytova, Olga V.; Пийр, И. В.; Королева, М. С.; Перов, Д. В.; Ринкевич, А. Б.

doi:10.1016/j.jmmm.2019.165800

Cited by 11 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…14). In the Tb 2 NiTiO 6 and Ho 2 NiTiO 6 compounds, small amounts of Tb 4 O 7 and Ho 2 Ti 2 O 7 impurity phases were detected around 29 • and 30.5 • (the symbols '•'and '♢'), and the corresponding weight ratios were determined to be 1.83 and 3.25 wt%, respectively [46,47]. The Rietveld indices were calculated, and the values of the refinement factors R p , R wp , R exp and χ 2 are all lower than 10% (as listed in table 1), which verifies the reliability of refinements.…”

Section: Resultsmentioning

confidence: 99%

Structural, magnetic and magnetocaloric properties in distorted RE ₂NiTiO₆ double perovskite compounds

Zhang

Peng²,

Jia³

et al. 2023

J. Phys. Energy

View full text Add to dashboard Cite

The magnetocaloric effect (MCE) based Magnetic refrigeration (MR) was considered a novel energy-efficient and environmentally benign cooling method. However, the lack of suitable magnetic solids has slowed the development of its practical applications. We herein fabricated the RE2NiTiO6 (RE = Gd, Tb and Ho) double perovskite (DP) compounds and systematically determined their structural, magnetic and magnetocaloric properties by experimental determination and density functional theory (DFT) calculations, in which the Gd2NiTiO6 was realized to exhibit promising cryogenic magnetocaloric performances. The results indicated that all the RE2NiTiO6 DP compounds crystallized in a distorted monoclinic structure with P21/n space group and underwent a second order type magnetic phase transition around 4.3, 4.5 and 3.9 K, for Gd2NiTiO6, Tb2NiTiO6 and Ho2NiTiO6, respectively. The magnetocaloric performances were checked by the parameters of maximum magnetic entropy change and relative cooling power, which are 31.28 J/kg∙K and 242.11 J/kg for Gd2NiTiO6, 13.08 J/kg∙K and 213.41 J/kg for Tb2NiTiO6, 11.98 J/kg∙K and 221.73 J/kg for Ho2NiTiO6 under the magnetic field change of 0-50 kOe, respectively. Evidently, the Gd2NiTiO6 compound exhibit promising magnetocaloric performances and therefore is of potential for practical cryogenic MR applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Structural, magnetic and magnetocaloric properties in distorted RE ₂NiTiO₆ double perovskite compounds

Zhang

Peng²,

Jia³

et al. 2023

J. Phys. Energy

View full text Add to dashboard Cite

show abstract

“…Повышенный интерес исследователей в настоящее время вызывают также низкотемпературные магнитные свойства редкоземельных титанатов со структурой пирохлора, в основном за счет реализации состояния «спинового льда» [14]. Свойства-ми спинового льда обладают титанаты диспрозия Dy 2 Ti 2 O 7 и гольмия Ho 2 Ti 2 O 7 .…”

Section: висмутсодержащий манганит лантанаunclassified

“…Исследуются также другие соединения, которые потенциально могут проявлять подобные свойства, например Yb 2 Ti 2 O 7 , Er 2 Ti 2 O 7 и др. Магнитные характеристики материала в состоянии спинового льда можно описать концепцией существования и движения «магнитных монополей» [14,15]. Эти необычные магнитные состояния реализуются при сверхнизких температурах, как правило менее 1 К. Несмотря на то, что такие температуры пока не очень удобны для практических применений, проводятся новые эксперименты с монополями, которые позволят лучше понять динамику магнитных дефектов в веществе.…”

Section: висмутсодержащий манганит лантанаunclassified

Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials

Baranovskaya

Karpov

Petrova

et al. 2020

Izv.VUZ. Tsvet. Met.

View full text Add to dashboard Cite

This review is devoted to the review of current trends in the use of rare-earth metals (REM) in two major scientific and technical fields – the production of magnetic and luminescent materials. The reviews show that it is REM that gives this product unique properties. The information on the content of matrix and alloying components, their influence on achieving the required characteristics of the most popular magnetic materials is systematized. The prospects of new combinations of rare-earth metals in the further progress of the production of magnetic materials for various purposes are shown. Along with the traditional cobalt-samarium and neodymium-iron-boron compositions, new magnetic materials with increased hysteresis properties and temperature-time stability have been developed, phases with variable valence have been synthesized, which are used as memory elements in information systems. The article also reviews and summarizes the results of studies in another important area of REM application – the creation of luminescent materials. Phosphors based on compounds of rare earth metals are used in the production of high-pressure mercury lamps with improved characteristics, X-ray screens, high and low pressure fluorescent lamps, screens for electron-optical converters. Narrow-band phosphors based on REM compounds are of interest for lamps used in plant growing, especially for areas with a cold climate, where year-round plant growth is possible only with the use of additional radiation sources.The trends in the synthesis of luminescent materials using various rare-earth metals and their combinations are revealed. Attention is turned to the need to use chemically pure precursors of rare-earth metals in the creation of such materials. The prospects of creating nanophosphors, as well as the improvement of synthesis methods and diagnostic methods, are noted.

show abstract

Magnetic Properties of Rare Earth Titanates Ho2Ti2O7 and Yb2Ti2O7 Doped with Y and Bi

Nemytova,

Rinkevich,

Perov

et al. 2024

J Supercond Nov Magn

View full text Add to dashboard Cite

Magnetic properties of nanocomposite and bulk rare earth titanates Ho2Ti2O7 and Yb2Ti2O7

Cited by 11 publications

References 12 publications

Structural, magnetic and magnetocaloric properties in distorted RE ₂NiTiO₆ double perovskite compounds

Structural, magnetic and magnetocaloric properties in distorted RE ₂NiTiO₆ double perovskite compounds

Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials

Magnetic Properties of Rare Earth Titanates Ho2Ti2O7 and Yb2Ti2O7 Doped with Y and Bi

Contact Info

Product

Resources

About

Magnetic properties of nanocomposite and bulk rare earth titanates Ho2Ti2O7 and Yb2Ti2O7

Cited by 11 publications

References 12 publications

Structural, magnetic and magnetocaloric properties in distorted RE 2NiTiO6 double perovskite compounds

Structural, magnetic and magnetocaloric properties in distorted RE 2NiTiO6 double perovskite compounds

Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials

Magnetic Properties of Rare Earth Titanates Ho2Ti2O7 and Yb2Ti2O7 Doped with Y and Bi

Contact Info

Product

Resources

About

Structural, magnetic and magnetocaloric properties in distorted RE ₂NiTiO₆ double perovskite compounds

Structural, magnetic and magnetocaloric properties in distorted RE ₂NiTiO₆ double perovskite compounds