Complex ferromagnetic-antiferromagnetic phase transition and glass-like arrest of kinetics in Sm1−xBaxCrO3 (x = 0 and 0.1)

Abstract

Magnetic properties of electron doped Sm 0.1 Ca 0.9 − y Ba y MnO 3 ( y = 0.02 , 0.06 ) manganites: Pressure effects on competitive ferromagnetic and antiferromagnetic interactions J. Appl. Phys.The dc magnetization studies of polycrystalline sample Sm 1Àx Ba x CrO 3 (x ¼ 0 and 0.1) show the existence of a magnetic glass-like arrest of kinetics. There exist constant frozen fractions of antiferromagnetic state in this complex phase transition process, the frozen fractions are about 33% and 17%, respectively, in SmCrO 3 and Sm 0.9 Ba 0.1 CrO 3 at the cooling and warming rates of 1.5 K/min. The degree of ferromagnetic-antiferromagnetic (FM-AFM) phase transitions is closely corresponding to the kinetic behaviors and thermomagnetic irreversibility. The FM-AFM phase transition and the frozen AFM fractions jointly affect the kinetics of glassy behaviors. The magnetic phase transition and glassy state was gradually repressed with the increase of the applied magnetic field, this complex behavior could be tuned in a number of ways in a two parameter (T and H) phase space. V C 2014 AIP Publishing LLC. [http://dx.

Zero-field cooled exchange bias effect in La Sm1−CrO3 (x=0–0.9) ceramics

“…Below the spin reorientation transition temperature (T SR ), the weak FM moment generates an internal field (H I ) at the R 3 þ site [28]. Due to the paramagnetic effect of magnetic R 3 þ , the antiparallel coupling between R 3 þ and Cr 3 þ sometimes brings about spin reorientation [10][11][12][13][14][15], negative magnetization [16][17][18][19], and EB effects [20][21][22][23]. By changing the magnitude of external magnetic field, tunable magnetic behavior can be obtained.…”

“…Recently, spontaneous magnetic anisotropy induced by spin reorientation causes renewed interests in rare-earth orthochromites [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. The compounds RCrO 3 (R ¼La-Lu, and Y) crystallize in orthorhombic distorted perovskite structure with four formula units per unit cell [27].…”

Phase separation and exchange bias effect in Ca doped EuCrO3

“…3,9,10 The perovskite-related rare-earth chromites have attracted much attention in their magnetic and electronic properties in recent years. [11][12][13][14] Both rare earth chromite EuCrO 3 and alkaline earth chromite CaCrO 3 have an orthorhombic perovskite structure with a space group Pbnm at room temperature. [13][14][15][16][17] EuCrO 3 shows a weak spontaneous ferromagnetic moment below a Néel temperature of 181 K, which is attributed to a slight canting of the antiferromagnetically aligned Cr 3+ moments.…”

Local inhomogeneous state in multiferroic SmCrO3

“…R = Yb, Er, Y, Lu and Sm) exhibit a rich variety of physical properties, making them a fruitful playground for both fundamental materials physics and applied related studies. Unique attributes such as magnetisation reversal (or negative magnetisation) phenomena, exchange bias and magnetisation switching were recently observed in orthochromites [1][2][3][4][5][6][7][8] . The different ferroic orders that these multiferroic perovskite-like materials may exhibit, such as ferromagnetism, ferroelectricity, and/or ferroelasticity, further contribute to their scientific relevance [9][10][11] .…”