Unusual magnetic properties of NiO nanoparticles embedded in a silica matrix

Magnetic properties of NiO (nickel oxide) nanoparticles: Blocking temperature and Neel temperature

“…are very interesting for the investigation of magnetic properties and applications [27,[58][59][60].…”

The study of magnetic properties and relaxation processes in Co/Au bimetallic nanoparticles

“…For even stronger interactions the collective behavior of superspins predominate and so called superspin glass state below the critical temperature for superspin ordering T SSG can be observed [25]. In this case the relaxation time is given by equation [22].…”

Annealing-dependent structural and magnetic properties of nickel oxide (NiO) nanoparticles in a silica matrix

“…Interest in the magnetic properties of nanosized NiO has recently been revived due to reports of interesting and complex magnetic behavior [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Although bulk NiO is antiferromagnetic, nanoparticles exhibit room-temperature coercivity, spin-glass behavior, superparamagnetism, memory effects, exchange bias effects and magnetic transitions at low temperature [17][18][19][20][21][22][23][24][25][26][27][28][29].…”