Realization of Compact Hybrid Trapped Field Magnet above 10 T with 7 T Applied Field

In this work, the mechanochemical synthesis method was used for the first time to produce powders of the nanocrystalline Nd1.1Fe10CoTi compound from Nd2O3, Fe2O3, Co and TiO2. High-energy-milled powders were heat treated at 1000 °C for 10 min to obtain the ThMn12-type structure. Volume fraction of the 1:12 phase was found to be as high as 95.7% with 4.3% of a bcc phase also present. The nitrogenation process of the sample was carried out at 350 °C during 3, 6, 9 and 12 h using a static pressure of 80 kPa of N2. The magnetic properties Mr, µ0Hc, and (BH)max were enhanced after nitrogenation, despite finding some residual nitrogen-free 1:12 phase. The magnetic values of a nitrogenated sample after 3 h were Mr = 75 Am2 kg–1, µ0Hc = 0.500 T and (BH)max = 58 kJ·m–3. Samples were aligned under an applied field of 2 T after washing and were measured in a direction parallel to the applied field. The best value of (BH)max~114 kJ·m–3 was obtained for 3 h and the highest µ0Hc = 0.518 T for 6 h nitrogenation. SEM characterization revealed that the particles have a mean particle size around 360 nm and a rounded shape.

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A unified perturbative approach to electrocaloric effects

Communications Materials ◽

10.1038/s43246-021-00167-6 ◽

2021 ◽

Vol 2 (1) ◽

Author(s):

Mónica Graf ◽

Jorge Íñiguez

Keyword(s):

External Field ◽

Taylor Series ◽

Physical Interpretation ◽

Applied Field ◽

Atomistic Simulations ◽

Small Field ◽

Electrocaloric Effect ◽

Perturbative Approach ◽

Similarities And Differences ◽

Straightforward Interpretation

AbstractThe electrocaloric effect, that is, the temperature change experienced by an insulator upon application of an electric field, offers promising ecofriendly alternatives to refrigeration. However, the theoretical treatments of this response are mostly case specific and lack a unified picture revealing the similarities and differences among the various known effects. Here, we show that the electrocaloric effect lends itself to a straightforward interpretation when expressed as a Taylor series in the external field. Our formalism explains in a unified and simple way the most notable small-field effects reported in the literature, namely the so-called normal and inverse electrocaloric responses, corresponding to an increase or decrease of temperature under applied field, as usually found in ferroelectrics or antiferroelectrics, respectively. This helps us to clarify their physical interpretation. We then discuss in detail atomistic simulations for the prototype ferroelectric PbTiO3, explicitly evaluating subtle predictions of the theory, such as the occurrence of competing contributions to the electrocaloric response.

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The effects of ABRACADABRA on reading outcomes: An updated meta‐analysis and landscape review of applied field research

Journal of Computer Assisted Learning ◽

10.1111/jcal.12417 ◽

2020 ◽

Vol 36 (3) ◽

pp. 260-279

Author(s):

Philip C. Abrami ◽

Larysa Lysenko ◽

Eugene Borokhovski

Keyword(s):

Applied Field ◽

Meta Analysis ◽

Field Research ◽

Reading Outcomes

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Study on built-in electric field and nonlinear optical properties in InxGa1-xN/GaN single quantum well under the presence of external applied field

10.1063/5.0017236 ◽

2020 ◽

Author(s):

S. Panda ◽

T. Das ◽

B. K. Panda

Keyword(s):

Optical Properties ◽

Electric Field ◽

Quantum Well ◽

Applied Field ◽

Nonlinear Optical ◽

Nonlinear Optical Properties ◽

Single Quantum ◽

Single Quantum Well

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Multicritical Points in the Applied Field vs Temperature Phase Diagrams of Antiferroelectric Transitions

Journal of the Physical Society of Japan ◽

10.1143/jpsj.52.2088 ◽

1983 ◽

Vol 52 (6) ◽

pp. 2088-2092 ◽

Cited By ~ 3

Author(s):

Ikuo Suzuki ◽

Yoshihiro Ishibashi

Keyword(s):

Phase Diagrams ◽

Applied Field ◽

Temperature Phase ◽

Multicritical Points

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Clinical Pharmacy Administration

Drug Intelligence & Clinical Pharmacy ◽

10.1177/106002808802201117 ◽

1988 ◽

Vol 22 (11) ◽

pp. 903-905

Author(s):

Thomas R. Einarson

Keyword(s):

Health Care ◽

Clinical Pharmacy ◽

Applied Field ◽

Research Evaluation ◽

Financial Economic ◽

Point Of View ◽

Health Care Practitioner ◽

Historical Perspectives ◽

Pharmacy Administration ◽

Separate Discipline

Clinical pharmacy administration has emerged as a separate discipline, but this new field has not been functionally defined. This article defines clinical pharmacy administration from an academic point of view and provides a framework within which it may be understood. It is an applied field of study that deals with the research, evaluation, and management of the patient, the drug, and the health care practitioner as they all relate to patient care. These entities and relationships are studied at the micro, macro, and global levels from financial, economic, managerial, legal, ethical, social, behavioral, educational, and historical perspectives. It is intended that this paper generate debate and discussion in order to refine and develop the field.

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