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Magnetic properties of x(Fe2O3).(100-x)[P2O5.Li2O] and x(Fe2O3).(100-x)[P2O5.CaO] glass systems
NASA Astrophysics Data System (ADS)
Andronache, Constantin; Racolta, Dania; Ardelean, Gheorghe
2017-12-01
Magnetic properties of x(Fe2O3).(100-x)[P2O5 .Li2O] and x(Fe2O3).(100-x)[P2O5 .CaO] with 0 < x ≤ 50 mol % were investigated using magnetic susceptibility measurements. The both glass systems were prepared in the same condition. The valence states and the distribution of iron ions in the glass matrix depend on the Fe2O3 content. For the P2O5.CaO glass matrix with x≤35mol%, the data revealed iron ions as isolated or participating in dipole-dipole interaction. For x > 35 mol% an antiferromagnetic coupling is observed. For the P2O5.Li2O glass matrix, the iron ions behave magnetically similarly as in other oxide glasses, but concentration of Fe2O3 over which magnetic superexchange interactions occur is lower. The absolute magnitude of θp values increases when content of Fe2O3 are increased. If the content of the magnetic ions is increased in the glass, the exchange integral increased and as a result the magnitude of the θP increases.
Heat capacities of synthetic hedenbergite, ferrobustamite and CaFeSi2O6 glass
USGS Publications Warehouse
Haselton, H.T.; Robie, R.A.; Hemingway, B.S.
1987-01-01
Heat capacities have been measured for synthetic hedenbergite (9-647 K), ferrobustamite (5-746 K) and CaFeSi2O6 glass (6-380 K) by low-temperature adiabatic and differential scanning calorimetry. The heat capacity of each of these structural forms of CaFeSiO6 exhibits anomalous behavior at low temperatures. The X-peak in the hedenbergite heat-capacity c
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5 | [GO] | 2025―Feb―18 | Pre • Search resultsCOD ID | Links | Formula | Space group | Cell parameters | Cell volume | Bibliography | 7214770 | CIF | C18 H14 N2 O3 | P b c a | 10.6419; 12.6654; 22.1187 | 90; 90; 90 2981.25 | Veidis, Mikelis V.; Orola, Liana; Mutikainen, Ilpo; Sarcevica, Inese | The conformation of pyrogallol as a result of cocrystallization with N-heterocyclic bases CrystEngComm, 2012, 14, 7253 4023397 | CIF | C18 H14 N2 O2 | P b c a | 18.849; 7.479; 19.864 | 90; 90; 90 2800.3 | Angela Salcedo; Luc Neuville; Jieping Zhu | Palladium-Catalyzed Intramolecular C-Arylation of Benzylic Carbon: Synthesis of 3-Benzoxazolylisoindolinones by a Sequence of Ugi-4CR/Postfunctionalization Journal of Organic Chemistry, 2008, 73, 3600-3603 4032180 | CIF | C18 H14 N2 O | P b c a | 17.3073; 9.4291; 17.5336 | 90; 90; 90 2861.3 | Sahoo, Harekrishna; Mukherjee, Sayan; Grandhi, Gowri Sankar; Selvakumar, Jayaraman; Baidya, Mahiuddin | Copper Catalyzed C-N Cross-Coupling Reaction of Aryl Boronic Acids at Room Temperature through Chelation Assistance. The Journal of organic chemistry, 2017, 82, 2764-2771 7050845 | CIF | C18 H14 Mn N5 O2 | P b c a | 11.2826; 17.0485; 17.5949 | 90; 90; 90 3384.4 | Shi, Qian; Cao, Rong; Li, Xing; Luo, Junhua; Hong, Maochun; Chen, Zhongning | Synthes |