Spin-reorientation transitions in magnetic multilayers with cubic anisotropy and biquadratic exchange

Kostyuchenko, V. V.; Zvezdin, A. K.

doi:10.1016/s0304-8853(97)00133-9

Cited by 10 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several experiments have been performed motivated by this suggestion [222,375,[513][514][515], but the results seem inconclusive due to the difficulty in distinguishing domain formation from the absence of ferromagnetic order. An identical anomaly is found when an applied magnetic field is made to counterbalance exactly the anisotropy field; in such a case, we are confronted with a first order phase transition [247,[516][517][518][519], and it is likely that the character of the above mentioned reorientation phase transitions is identical. It is not clear, however, whether these magnetic instabilities do correspond to a XY magnetic system (which is expected not to be magnetically ordered at finite temperatures) and some studies do suggest that the system simply breaks into very fine magnetic domains [220,[520][521][522][523][524][525].…”

Section: The Two-dimensional Magnetic Phase Transitionmentioning

confidence: 84%

Magnetism in ultrathin film structures

Vaz¹,

Bland²,

2008

View full text Add to dashboard Cite

In this paper, we review some of the key concepts in ultrathin film magnetism which underpin nanomagnetism. We survey the results of recent experimental and theoretical studies of well characterized epitaxial structures based on Fe, Co and Ni to illustrate how intrinsic fundamental properties such as the magnetic exchange interactions, magnetic moment and magnetic anisotropies change markedly in ultrathin films as compared with their bulk counterparts, and to emphasize the role of atomic scale structure, strain and crystallinity in determining the magnetic properties. After introducing the key length scales in magnetism, we describe the 2D magnetic phase transition and survey studies of the thickness dependent Curie temperature and the critical exponents which characterize the paramagnetic-ferromagnetic phase transition. We next discuss recent experimental and theoretical results on the determination of the exchange constant, followed by an overview of measurements of the magnetic moment in the elemental 3d transition metal thin films in the various crystal phases that have been successfully stabilized, thereby illustrating the sensitivity of the magnetic moment to the local symmetry and to the atomic environment. Finally, we discuss briefly the magnetic anisotropies of Fe, Co and Ni in the fcc crystalline phase, to emphasize the role of structure and the details of the interface in influencing the magnetic properties. The dramatic effect that adsorbates can have on the magnetic anisotropies of thin magnetic films is also discussed. Our survey demonstrates that the fundamental properties, namely, the magnetic moment and magnetic anisotropies of ultrathin films have dramatically different behaviour compared with those of the bulk while the comparable size of the structural and magnetic contributions to the total energy of ultrathin structures results in an exquisitely sensitive dependence of the magnetic properties on the film structure.

show abstract

Section: The Two-dimensional Magnetic Phase Transitionmentioning

confidence: 84%

Magnetism in ultrathin film structures

Vaz¹,

Bland²,

2008

View full text Add to dashboard Cite

show abstract

“…The analysis of the experimental results was performed in the framework of a theoretical model [9,10] taking into account the bilinear and biquadratic exchange interactions between two magnetic layers of iron separated by a nonmagnetic spacer and the cubic and uniaxial anisotropy in the iron layers. The magnetic moments within the magnetic layers are ordered ferromagnetically and the magnetization of each Fe layer makes angles of θ 1 and θ 2 with the direction [100].…”

Section: Calculation and Discussionmentioning

confidence: 99%

“…This figure presents the change of the normalized projection of the magnetization (M R /M S ) and the normalized angle of rotation of the polarization plane ( R / S ), both measured in magnetic field H = 0 (M R and R are remanent magnetization and remanent rotation, respectively). There are also the dependences of M R /M S on the angle α at 300 K (•) and at 10 K (•) and the dependence of R / S ( ) on the angle α at 300 K. According to a theoretical model [9,10], which is successfully applied to the description of the layered magnetic structure [5,6], we consider that the magnetic moments inside the iron layers are ordered ferromagnetically, as in the common case of bulk iron. In this situation the magnetic state of this layered system is characterized by the directions of the magnetization in two Fe layers.…”

Section: Methodsmentioning

confidence: 99%

Spontaneous and field-induced magnetic configurations in a Fe/Si/Fe trilayer with ferromagnetic interlayer exchange

Chizhik

Gnatchenko

Баран

et al. 2002

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Magnetization reversal of a Fe/Si/Fe trilayer having a ferromagnetic bilinear and biquadratic exchange is investigated at 10 and 300 K. The experiments were performed using the magneto-optical Kerr effect technique and a SQUID magnetometer. The type of stable magnetic configuration is determined for both temperatures of the study. The hysteresis loops contain jumps in magnetization, which could be associated with the overcoming of the energy barriers related to the uniaxial anisotropy hard axes in the two iron layers. The analysis of the experimental results was performed in the framework of a model in which the ferromagnetic bilinear and biquadratic exchange between two magnetic layers separated by a nonmagnetic spacer and the cubic and uniaxial anisotropy were taken into account. Good qualitative agreement is obtained between the experimental and calculated field dependences of the magnetization.

show abstract

CrFe

Note¹

2022

Magnetic Properties of Metals: Magnetic and Electric Properties of Magnetic Metallic Multilayers

View full text Add to dashboard Cite

Spin-reorientation transitions in magnetic multilayers with cubic anisotropy and biquadratic exchange

Cited by 10 publications

References 8 publications

Magnetism in ultrathin film structures

Magnetism in ultrathin film structures

Spontaneous and field-induced magnetic configurations in a Fe/Si/Fe trilayer with ferromagnetic interlayer exchange

CrFe

Contact Info

Product

Resources

About