The magnetic hyperfine field in gadolinium metal

Zmora, H.; Blau, Miri; Ofer, S.

doi:10.1016/0375-9601(69)90675-6

Cited by 20 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hiifner [1] and Zmora et al [3] estimated contribution (2) to be +240 kOe, Le., almost twice as large as in YbA12, YA12 and AI. This change is consistent with a larger change density at the Gd nucleus in Gd metal compared with Gd in the dilute alloys [6], because the magnitude of (2) depends on the 1 s 1 -like electron density of states at the Fermi level.…”

Section: C>e = 2g 2 +Iln(h Ns -H Na )mentioning

confidence: 97%

“…The meas magnetically ordered materials may be consid ured splitting gives HNS because [5] ered to have three main sources [1][2][3]…”

mentioning

confidence: 99%

“…The meas magnetically ordered materials may be consid ured splitting gives HNS because [5] ered to have three main sources [1][2][3]: (1) core /fNA = /fhfA ±/t o ' (2) polarization; (2) local conduction electron polar ization; (3) neighbor effects, including conduc where /fhfA is the hyperfine splitting in the ab tion electron polarization. overlap effects and sorber and H o is the external field.…”

mentioning

confidence: 99%

“…The magnitude of contribution (1) 4f 7 configuration and an 8S~ ground state; hence may be obtained from measurements of Gd 3 + we expect the paramagnetic hyperfine field in the hyperfine interactions in diamagnetic insula source to have a Brillouin function dependence tors (-340 kOe). The magnitude of contribuon HolT, Le., tion (2) could be obtained from measurements /thfS =/fNS -/fõ f Gd 3 + hyperfine interactions in metallic, dia magnetic hosts, assuming that (1) has the same (3) magnitude in metals as in insulators. In this letter.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Hyperfine interaction in Gd in diamagnetic, metallic hosts

Frankel¹

1969

Physics Letters A

View full text Add to dashboard Cite

Mtissbauer effect data for dilute. paramagnetic Gd in the diamagnetic, metallic hosts YAI 2 • YbAl2 and Al are analysed and yield a local conduction electron polarization contribution to the Gd hyperfine field of + 140 kOe.Hyperfine fields at Gd nuclei in metallic, field at the nucleus in the absorber. The meas magnetically ordered materials may be consid ured splitting gives HNS because [5] ered to have three main sources [1][2][3]polarization; (2) local conduction electron polar ization; (3) neighbor effects, including conduc where /fhfA is the hyperfine splitting in the ab tion electron polarization. overlap effects and sorber and H o is the external field. Gd 3 + has a covalency. The magnitude of contribution (1) 4f 7 configuration and an 8S~ ground state; hence may be obtained from measurements of Gd 3 + we expect the paramagnetic hyperfine field in the hyperfine interactions in diamagnetic insula source to have a Brillouin function dependence tors (-340 kOe). The magnitude of contribuon HolT, Le., tion (2) could be obtained from measurements /thfS =/fNS -/fõ f Gd 3 + hyperfine interactions in metallic, dia magnetic hosts, assuming that (1) has the same Where C>.E is the observed splitting, HNS is theo y field at the nucleus in the source and /fNA is the

show abstract

Section: C>e = 2g 2 +Iln(h Ns -H Na )mentioning

confidence: 97%

“…The meas magnetically ordered materials may be consid ured splitting gives HNS because [5] ered to have three main sources [1][2][3]…”

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Hyperfine interaction in Gd in diamagnetic, metallic hosts

Frankel¹

1969

Physics Letters A

View full text Add to dashboard Cite

show abstract

NMR Study of Ferromagnetic Gd Intermetallic Compounds with CsCl Structure

Oppelt

Dormann

Buschow³

1972

Physica Status Solidi (b)

View full text Add to dashboard Cite

By means of spin echo techniques the zero field resonance of Gd155, Gd157, Agio', Agio9, and Zn67 nuclei could be detected in the ferromagnetically ordered CsCl type compounds GdAgl -,In,, GdAgl -xZn,, and GdZnl -,In,. I n some cases well resolved lines could not be obtained due to broadening. Both, the hyperfine field of the magnetic and of the nonmagnetic ions are negative. No significant hyperfine field variation with conduction electron concentration is observed for the nonmagnetic ions while for the Gd ions i t is appreciable. This cannot be explained by the simple RKKY approach, in which the interaction between the localized Gd-moments and the conduction electrons is considered t o be a I-function interaction and in which the Fermi surface is assumed to be spherical. The variation of the hyperfine fields was also studied in the systems GdCdl -xZn, and GdIno.5 (1 -%)-Ago.5 (1 -%)Zn,, in which the number of conduction electrons remains constant. Essentially no change is found in GdCdl-xZn,, where divalent Cd is replaced by divalent Zn. In GdIno.5 (1 -+)Ago.5 (1 -%)Zn,, where divalent Zn is replaced by monovalent Ag and trivalent In, the hyperfine fields become smaller with decreasing x. Apparently the reduction of the conduction electrons' mean free path due to potential scattering modifies their polarization.Mittels Spin-Echo-Technik wurde die Nullfeld-Resonanz von Gd1=, Gd157, Ag107, Aglo9 und Zne7-Kernen in den ferromagnetisch geordneten Verbindungen mit CsC1-Struktur, GdAgl-,In,, GdAgl -%Zn, und GdZnl-%In,, nachgewiesen. I n einigen Fallen konnten wegen Verbreiterung keine gut aufgelosten Linien erhalten werden. Das Hyperfeinfeld ist sowohl fur die magnetischen wie fur die nichtmagnetischen Ionen negativ. Eine bedeutende Hyperfeinfeldvariation mit der Leitungselektronenkonzentration fur die nichtmagnetischen Ionen wurde nicht beobachtet, wlhrend sie fur die Gd-Ionen betrachtlich ist. Dies kann nicht mit der einfachen RKKY-Naherung erklart werden, in der die Wechselwirkung zwischen den lokalisierten Gd-Momenten und den Leitungselektronen als I-Funktion-Wechselwirkung berucksichtigt wird und in der angenommen wird, daB die Permiflache kugelformig ist. Die h d e r u n g des Hyperfeinfeldes wurde in den Systemen GdCdl-%Zn, und GdIno,b (1 -%)Ago,b (1 -x)Zn,, in der die Zahl der Leitungselektronen konstant ist, ebenfalls untersucht. I m wesentlichen werden in GdCdl-%Zn,, bei dem zweiwertiges Cd durch zweiwertiges Zn ersetzt wird, keine h d e r u n g e n gefunden. I n GdIno,b (1 -z)Ago,5 (1 -x)Zn,, bei dem zweiwertiges Zn durch einwertiges Ag und dreiwertiges In ersetzt wird, werden die Hyperfeinfelder mit abnehmendem z kleiner. Offensichtlich modifiziert die Verkleinerung der mittleren freien Weglange der Leitungselektronen durch Potentialstreuung ihre Polarisation.

show abstract

Hyperfine Interactions

Bleaney¹

1972

Magnetic Properties of Rare Earth Metals

View full text Add to dashboard Cite

The magnetic hyperfine field in gadolinium metal

Cited by 20 publications

References 6 publications

Hyperfine interaction in Gd in diamagnetic, metallic hosts

Hyperfine interaction in Gd in diamagnetic, metallic hosts

NMR Study of Ferromagnetic Gd Intermetallic Compounds with CsCl Structure

Hyperfine Interactions

Contact Info

Product

Resources

About