On the Magnetic Structure of the Intermetallic Compounds Gd<sub>2</sub>Al And Gd<sub>2</sub>Au

Bredimas, V.; Papatriantafyllou, K.; Gamari‐Seale, H.

doi:10.1002/pssb.2221170211

“…The reason for the decrease of c for z = 1. 4 has not been found. The rate of increase of 0 for z 2 0.8 is larger than those for u and C, and it is observed a n abrupt increase in the nnit cell volume for z 2 1.4.…”

Section: X-ray Datamentioning

confidence: 87%

The Effect of Disorder in the Magnetic Properties of the Pseudobinary Compound Gd2−xLaxAl

Yazdani

¹

,

Gamari‐Seale

²

1986

phys. stat. sol. (a)

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“…The unusual magnetic behaviour of these systems has been the subject of numerous experimental [5 to 10] and theoretical [11,12] investigations, but the results are still contradictory. These compounds crystallize in the same orthorhombic space group Pnma with four formula units forming the unit 8R in two non-equivalent positions [13,14].…”

Section: Introductionmentioning

confidence: 99%

Stabilization of Reentrance AFM on Gd2Al System in a Certain Electron Concentration

Yazdani

¹

,

Gardner

²

1998

phys. stat. sol. (b)

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A random mixture of two compounds with different type of magnetic ordering which can lead to a new phase with different magnetic characteristics is studied. Such an interesting random magnetic system can be formed by a ferromagnet (e.g. Gd 2 Au) and antiferromagnetic system like e.g. Gd 2 Al with localized magnetic moments where, in principle, the dominant exchange interactions are those of the nearest neighbours. A systematic study on the solid solutions of the type Gd 2 (Al 1± ±x Au x ) is reported here. (I) The roles and effects of conduction electron concentration ªc.e.c.º on the magnetic structure, where the magnetic behaviour is shape dependent (0.2`x`0). (II) The cause of magnetic instability of Gd 2 Al, which should be due to the ªc.eº. (III) The critical stabilized point by decreasing ªc.e.c.º. It is shown that the magnetic phase of the pseudobinary intermetallic compound Gd 2 (Au x Al 1± ±x ) becomes unstable by increasing the conduction electron concentration through the variation in unit cell dimensions. It becomes stable at a critical value of c.e.c., where Se ij J ij 0, resulting in a paramagnetic behaviour (q p % 0 to 5) at x 0.3. It is shown that the instabilities of the crystal and magnetic structure are functions of c.e.c. and depend on the Fermi sphere K F which is the main cause of the shape dependence of the magnetic structure of the sample.

show abstract

“…The unusual magnetic behaviour of these systems has been the subject of numerous experimental [5 to 10] and theoretical [11,12] investigations, but the results are still contradictory. These compounds crystallize in the same orthorhombic space group Pnma with four formula units forming the unit 8R in two non-equivalent positions [13,14].…”

Section: Introductionmentioning

confidence: 99%

Stabilization of Reentrance AFM on Gd2Al System in a Certain Electron Concentration

Yazdani

¹

,

Gardner

²

1998

phys. stat. sol. (b)

0

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A random mixture of two compounds with different type of magnetic ordering which can lead to a new phase with different magnetic characteristics is studied. Such an interesting random magnetic system can be formed by a ferromagnet (e.g. Gd 2 Au) and antiferromagnetic system like e.g. Gd 2 Al with localized magnetic moments where, in principle, the dominant exchange interactions are those of the nearest neighbours. A systematic study on the solid solutions of the type Gd 2 (Al 1± ±x Au x ) is reported here. (I) The roles and effects of conduction electron concentration ªc.e.c.º on the magnetic structure, where the magnetic behaviour is shape dependent (0.2`x`0). (II) The cause of magnetic instability of Gd 2 Al, which should be due to the ªc.eº. (III) The critical stabilized point by decreasing ªc.e.c.º. It is shown that the magnetic phase of the pseudobinary intermetallic compound Gd 2 (Au x Al 1± ±x ) becomes unstable by increasing the conduction electron concentration through the variation in unit cell dimensions. It becomes stable at a critical value of c.e.c., where Se ij J ij 0, resulting in a paramagnetic behaviour (q p % 0 to 5) at x 0.3. It is shown that the instabilities of the crystal and magnetic structure are functions of c.e.c. and depend on the Fermi sphere K F which is the main cause of the shape dependence of the magnetic structure of the sample.

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On the Magnetic Structure of the Intermetallic Compounds Gd₂Al And Gd₂Au

Cited by 10 publications

References 15 publications

The Effect of Disorder in the Magnetic Properties of the Pseudobinary Compound Gd2−xLaxAl

The Effect of Disorder in the Magnetic Properties of the Pseudobinary Compound Gd2−xLaxAl

Stabilization of Reentrance AFM on Gd2Al System in a Certain Electron Concentration

Stabilization of Reentrance AFM on Gd2Al System in a Certain Electron Concentration

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On the Magnetic Structure of the Intermetallic Compounds Gd2Al And Gd2Au

Cited by 10 publications

References 15 publications

The Effect of Disorder in the Magnetic Properties of the Pseudobinary Compound Gd2−xLaxAl

The Effect of Disorder in the Magnetic Properties of the Pseudobinary Compound Gd2−xLaxAl

Stabilization of Reentrance AFM on Gd2Al System in a Certain Electron Concentration

Stabilization of Reentrance AFM on Gd2Al System in a Certain Electron Concentration

Contact Info

Product

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On the Magnetic Structure of the Intermetallic Compounds Gd₂Al And Gd₂Au