Modification of the Structure and Magnetic Properties of Cobalt-Doped Ferrihydrite Nanoparticles Under Heat Treatment

被引：7

作者：

Stolyar, S. V. ^{[1
,2
]}

Balaev, D. A. ^{[1
,2
]}

Krasikov, A. A. ^{[2
]}

Dubrovskiy, A. A. ^{[2
]}

Yaroslavtsev, R. N. ^{[1
,2
]}

Bayukov, O. A. ^{[2
]}

Volochaev, M. N. ^{[2
]}

Iskhakov, R. S. ^{[2
]}

机构：

[1] Siberian Fed Univ, Krasnoyarsk, Russia

[2] Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2018年 / 31卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Nanoparticles; Ferrihydrite; Magnetic properties; Structure; BACTERIAL FERRIHYDRITE; MOSSBAUER; FERRITIN; HYSTERESIS;

D O I：

10.1007/s10948-017-4263-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanoparticles of antiferromagnetic materials acquire the magnetic moment due to the surface effects and structural defects. According to the Neel hypothesis, magnetic moment mu (P) of a particle containing N magnetically active atoms with magnetic moment J can be estimated as mu (P) similar to J center dot N (n) or mu (P) similar to V (n) , where V is the particle volume. Numerous studies of the magnetic properties of ferrihydrite 5Fe(2)O(3)ai...9H(2)O and ferritin revealed a value of n ae 1/2 for this material, in which Fe atoms have the octahedral surrounding of anions. We investigate the effect of low-temperature annealing of cobalt-doped ferrihydrite nanoparticles on their average size and magnetic properties. Using the Mossbauer spectroscopy study, we demonstrate that doping with Co makes Fe atoms enter the anion tetrahedra which leads to an increase in the exponent n > 1/2 in the expression mu (P) similar to J center dot N (n) .

引用

页码：1133 / 1138

页数：6

共 29 条

[1] Magnetic properties of heat treated bacterial ferrihydrite nanoparticles [J].

Balaev, D. A. ;

Krasikov, A. A. ;

Dubrovskiy, A. A. ;

Popkov, S. I. ;

Stolyar, S. V. ;

Bayukov, O. A. ;

Iskhakov, R. S. ;

Ladygina, V. P. ;

Yaroslavtsev, R. N. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2016, 410 :171-180

[2] Magnetic properties and the mechanism of formation of the uncompensated magnetic moment of antiferromagnetic ferrihydrite nanoparticles of a bacterial origin [J].

Balaev, D. A. ;

Krasikov, A. A. ;

Dubrovskii, A. A. ;

Semenov, S. V. ;

Bayukov, O. A. ;

Stolyar, S. V. ;

Iskhakov, R. S. ;

Ladygina, V. P. ;

Ishchenko, L. A. .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2014, 119 (03) :479-487

[3] Mechanism of the formation of an uncompensated magnetic moment in bacterial ferrihydrite nanoparticles [J].

Balaev, D. A. ;

Dubrovskii, A. A. ;

Krasikov, A. A. ;

Stolyar, S. V. ;

Iskhakov, R. S. ;

Ladygina, V. P. ;

Khilazheva, E. D. .

JETP LETTERS, 2013, 98 (03) :139-142

[4]

Chukhrov F.V., 1973, Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya, P23

[5]

Dobretsov K, 2015, ACTA OTORHINOLARYNGO, V35, P97

[6] STRUCTURAL MODEL FOR FERRIHYDRITE [J].

DRITS, VA ;

SAKHAROV, BA ;

SALYN, AL ;

MANCEAU, A .

CLAY MINERALS, 1993, 28 (02) :185-207

[7] Treatment of zinc-contaminated water using a multistage ferrihydrite sorption system [J].

Dyer, JA ;

Trivedi, P ;

Sanders, SJ ;

Scrivner, NC ;

Sparks, DL .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 270 (01) :66-76

[8] Magnetic hysteresis and superantiferromagnetism in ferritin nanoparticles [J].

Gilles, C ;

Bonville, P ;

Rakoto, H ;

Broto, JM ;

Wong, KKW ;

Mann, S .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 241 (2-3) :430-440

[9] Excess spin and the dynamics of antiferromagnetic ferritin [J].

Harris, JGE ;

Grimaldi, JE ;

Awschalom, DD ;

Chiolero, A ;

Loss, D .

PHYSICAL REVIEW B, 1999, 60 (05) :3453-3456

[10] The structure of six-line ferrihydrite [J].

Jansen, E ;

Kyek, A ;

Schäfer, W ;

Schwertmann, U .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1) :S1004-S1006

← 1 2 3 →