Study on the Phase Transition of Spin - glass Induced by Disordered Silica in AB2O4 System View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2013-2015

FUNDING AMOUNT

300000.0 CNY

ABSTRACT

The origin of spin glass in geometrically frustrated magnets is still unknown and needs to be clarified. ZnCr2O4, as a typical material in geometrically frustrated magnets of AB2O4, is employed in this project. The ionic diluted disorder and the exchange-interaction disorder (bond disorder) are introduced by doping the nonmagnetic and magnetic ions with similar radii in ZnCr2O4, respectively. Advanced artificial intelligence atmosphere-controllable furnace is used to synthesize the high-quality sample. The designed magnetic experiments are carried out in magnetic properties measurement system (MPMS). The dc and ac magnetic properties are measured to investigate the detailed magnetic structure and spin relaxation of system. The theoretical models, such as critical-power law and so on, are employed to study the spin dynamics of spin glass in geometrially frustrated magnets. Then, the project clarifies the machanism of spin glass induced by these two disorders. Through doping the ions with appropriately different radii in ZnCr2O4, the lattices are changed to study the influence of spin-lattice coupling on the formation of spin glass. Finally, the project clarifies whether there is the difference between spin glass in geometrically frustrated magnets and conventional spin glass. More... »

URL

http://output.nsfc.gov.cn/conclusionProject/b983826068038b811e1970b834970ee2

Related SciGraph Publications

  • 2018-07-17. Magnetic Exchange Interactions in Geometrically Frustrated Antiferromagnet of ZnCr2−xGaxO4 in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • 2018-03-01. Spin Glass in a Geometrically Frustrated Magnet of ZnFe2O4 Nanoparticles in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • 2017-02-22. Effect of MoO3 Addition on the Magnetic Properties and Complex Impedance of Mn–Zn Ferrites with High Bs and High Initial Permeability in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • 2015-06-16. Double Exchange Interaction Between Mn3+ and Ru4+ Ions in La1−xSrxMn1−xRuxO3 in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • 2015-01-10. Complicated Magnetic Behaviors in Zn0.80Ni0.20Fe2O4 Nanoparticles in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • 2014-08-27. Investigation of Magnetic Entropy Change and Griffiths-like Phase in La0.65Ca0.35MnO3 Nanocrystalline in JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
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