Disorder-induced short-range ferromagnetism and cluster spin-glass state in sol-gel derivedLa0.7Ca0.3Mn1−xCdxO3(0⩽x⩽0.2)

The magnetic susceptibility of the spin-glass state that may appear in an itinerant-electron antiferromagnet containing magnetic impurities has been calculated as a function of the temperature. The spin–spin interaction mediated by the condensed electrons has been calculated and a short-range interaction of the form (cos 2k0r/r2)e−r/ξ0 has been obtained. A percolation mechanism has been used in order to explain the occurrence of the spin-glass state.

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Thickness induced crossover from the ferromagnetic to cluster spin glass state in Cr70Fe30 thin films

10.1063/1.4917607 ◽

2015 ◽

Author(s):

B. Ravi Kumar ◽

S. Srinath ◽

S. N. Kaul

Keyword(s):

Thin Films ◽

Spin Glass ◽

Spin Glass State ◽

Glass State ◽

Cluster Spin Glass

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A possible mechanism for the short-range spin-glass state in insulators

Journal of Magnetism and Magnetic Materials ◽

10.1016/0304-8853(84)90315-9 ◽

1984 ◽

Vol 40 (3) ◽

pp. 247-258 ◽

Cited By ~ 1

Author(s):

Zs. Gulácsi ◽

M. Gulácsi ◽

M. Crisan

Keyword(s):

Spin Glass ◽

Short Range ◽

Spin Glass State ◽

Glass State

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Presence of a Spin Glass State in Antiferromagnetic Tb2CuIn3

Materials Science Forum ◽

10.4028/www.scientific.net/msf.443-444.391 ◽

2004 ◽

Vol 443-444 ◽

pp. 391-396 ◽

Cited By ~ 4

Author(s):

I.M. Siouris ◽

I.P. Semitelou ◽

J.K. Yakinthos ◽

Wolfgang Schäfer

Keyword(s):

Magnetic Fields ◽

Spin Glass ◽

Long Range ◽

Short Range ◽

Magnetic Order ◽

Range Order ◽

Spin Glass State ◽

Glass State ◽

Range Magnetic Order ◽

Nearest Neighbours

Evidence of the coexistence of an ordered antiferromagnetic and a spin glass state is given by studying a polycrystalline Tb2CuIn3 sample with neutron diffraction in a non-magnetic and a magnetic environment. Tb2CuIn3 is an antiferromagnet with competing exchange interactions (J1> 0 for nearest neighbours and J2 < 0 for next nearest neighbours) and an ordering temperature TN =33 ± 1 K. Powder diffraction measurements reveal a broad diffuse peak - due to short-range magnetic order - underneath the (100) long-range order magnetic Bragg reflection. The exposure of the sample in magnetic fields up to 7.5 T, under both zero field and field-cooled conditions, show that neither the long-range magnetic order nor the short-range order are destroyed by the outer magnetic fields. The almost field independent behaviour of the magnetic intensities is explained by the existence of a spin glass state. Support on the simultaneous presence of antiferromagnetic and spin glass states is given by recent ac-dc magnetic measurements. The infinite range model for spin glasses with strong uniaxial anisotropy has predicted this kind of magnetic behaviour.

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